<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">		<infoTable>
			<nameOfIssuer>23andMe Holding Co</nameOfIssuer>
			<titleOfClass>CLASS A COM</titleOfClass>
			<cusip>90138Q108</cusip>
			<value>16707</value>
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		<infoTable>
			<nameOfIssuer>Adagio Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>00534A102</cusip>
			<value>18633</value>
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		<infoTable>
			<nameOfIssuer>Alector Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>014442107</cusip>
			<value>1787</value>
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				<sshPrnamt>175866</sshPrnamt>
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		</infoTable>
		<infoTable>
			<nameOfIssuer>Amplitude Inc</nameOfIssuer>
			<titleOfClass>COM CL A</titleOfClass>
			<cusip>03213A104</cusip>
			<value>2707</value>
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		<infoTable>
			<nameOfIssuer>Autolus Therapeutics PLC</nameOfIssuer>
			<titleOfClass>SPON ADR</titleOfClass>
			<cusip>05280R100</cusip>
			<value>1976</value>
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		<infoTable>
			<nameOfIssuer>Beam Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>07373V105</cusip>
			<value>12449</value>
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		<infoTable>
			<nameOfIssuer>Benson Hill Inc</nameOfIssuer>
			<titleOfClass>COMMON STOCK</titleOfClass>
			<cusip>082490103</cusip>
			<value>42065</value>
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		<infoTable>
			<nameOfIssuer>Cortexyme Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>22053A107</cusip>
			<value>420</value>
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		<infoTable>
			<nameOfIssuer>Cue Health Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>229790100</cusip>
			<value>86</value>
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				<sshPrnamt>27000</sshPrnamt>
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			<investmentDiscretion>DFND</investmentDiscretion>
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		<infoTable>
			<nameOfIssuer>Decibel Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>24343R106</cusip>
			<value>6889</value>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
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		<infoTable>
			<nameOfIssuer>Desktop Metal Inc</nameOfIssuer>
			<titleOfClass>COM CL A</titleOfClass>
			<cusip>25058X105</cusip>
			<value>24307</value>
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			<otherManager>1</otherManager>
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		<infoTable>
			<nameOfIssuer>Dexcom Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>252131107</cusip>
			<value>312143</value>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<otherManager>6</otherManager>
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				<Shared>4188154</Shared>
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		<infoTable>
			<nameOfIssuer>Duolingo Inc.</nameOfIssuer>
			<titleOfClass>CL A COM</titleOfClass>
			<cusip>26603R106</cusip>
			<value>12646</value>
			<shrsOrPrnAmt>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<votingAuthority>
				<Sole>0</Sole>
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				<None>0</None>
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		<infoTable>
			<nameOfIssuer>Enjoy Technology Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>29335V106</cusip>
			<value>943</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>4</otherManager>
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		<infoTable>
			<nameOfIssuer>EQRX Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>26886C107</cusip>
			<value>221615</value>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
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		<infoTable>
			<nameOfIssuer>EQRX Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>26886C107</cusip>
			<value>1407</value>
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			<investmentDiscretion>DFND</investmentDiscretion>
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		<infoTable>
			<nameOfIssuer>Evelo Biosciences Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>299734103</cusip>
			<value>2238</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
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		<infoTable>
			<nameOfIssuer>Exact Sciences Corp</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>30063P105</cusip>
			<value>914</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>6</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>23205</Shared>
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		<infoTable>
			<nameOfIssuer>Foghorn Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>344174107</cusip>
			<value>6812</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
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		<infoTable>
			<nameOfIssuer>Freshworks Inc</nameOfIssuer>
			<titleOfClass>CLASS A COM</titleOfClass>
			<cusip>358054104</cusip>
			<value>25529</value>
			<shrsOrPrnAmt>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>3</otherManager>
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		<infoTable>
			<nameOfIssuer>Freshworks Inc</nameOfIssuer>
			<titleOfClass>CLASS A COM</titleOfClass>
			<cusip>358054104</cusip>
			<value>27539</value>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
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		<infoTable>
			<nameOfIssuer>Fulcrum Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>359616109</cusip>
			<value>1182</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
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		<infoTable>
			<nameOfIssuer>Fulcrum Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>359616109</cusip>
			<value>70</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<otherManager>6</otherManager>
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				<Shared>14262</Shared>
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		<infoTable>
			<nameOfIssuer>Gitlab Inc</nameOfIssuer>
			<titleOfClass>CLASS A COM</titleOfClass>
			<cusip>37637K108</cusip>
			<value>31533</value>
			<shrsOrPrnAmt>
				<sshPrnamt>593404</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
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				<Shared>593404</Shared>
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		<infoTable>
			<nameOfIssuer>Hyperfine Inc</nameOfIssuer>
			<titleOfClass>COM CL A</titleOfClass>
			<cusip>44916K106</cusip>
			<value>2004</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
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				<Shared>898720</Shared>
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		<infoTable>
			<nameOfIssuer>Ideaya Biosciences Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>45166A102</cusip>
			<value>10394</value>
			<shrsOrPrnAmt>
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			<investmentDiscretion>DFND</investmentDiscretion>
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				<Shared>753187</Shared>
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		<infoTable>
			<nameOfIssuer>Illumina Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>452327109</cusip>
			<value>9858</value>
			<shrsOrPrnAmt>
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				<Shared>53470</Shared>
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		<infoTable>
			<nameOfIssuer>Invitae Corp</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>46185L103</cusip>
			<value>527</value>
			<shrsOrPrnAmt>
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			<nameOfIssuer>Kronos Bio Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>50107A104</cusip>
			<value>5235</value>
			<shrsOrPrnAmt>
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				<sshPrnamtType>SH</sshPrnamtType>
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			<investmentDiscretion>DFND</investmentDiscretion>
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		<infoTable>
			<nameOfIssuer>Lyell Immunopharma Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>55083R104</cusip>
			<value>38241</value>
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			<nameOfIssuer>Lyft Inc</nameOfIssuer>
			<titleOfClass>CL A COM</titleOfClass>
			<cusip>55087P104</cusip>
			<value>81515</value>
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			<otherManager>2</otherManager>
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			<nameOfIssuer>Magenta Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>55910K108</cusip>
			<value>4007</value>
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			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
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				<Shared>3339138</Shared>
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		<infoTable>
			<nameOfIssuer>Monte Rosa Therapeutics Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>61225M102</cusip>
			<value>14157</value>
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		<infoTable>
			<nameOfIssuer>New Relic Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>64829B100</cusip>
			<value>4561</value>
			<shrsOrPrnAmt>
				<sshPrnamt>91132</sshPrnamt>
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			<investmentDiscretion>DFND</investmentDiscretion>
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				<Shared>91132</Shared>
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		<infoTable>
			<nameOfIssuer>Oportun Finl Corp</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
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			<value>784</value>
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			<investmentDiscretion>DFND</investmentDiscretion>
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			<nameOfIssuer>Oscar Health Inc</nameOfIssuer>
			<titleOfClass>CL A</titleOfClass>
			<cusip>687793109</cusip>
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		<infoTable>
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		<infoTable>
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		<infoTable>
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		<infoTable>
			<nameOfIssuer>Planet Labs PBC</nameOfIssuer>
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		<infoTable>
			<nameOfIssuer>Rani Therapeutics Hldgs Inc</nameOfIssuer>
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		<infoTable>
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		<infoTable>
			<nameOfIssuer>Relay Therapeutics Inc</nameOfIssuer>
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		<infoTable>
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			<titleOfClass>COM</titleOfClass>
			<cusip>759916109</cusip>
			<value>62</value>
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		<infoTable>
			<nameOfIssuer>Robinhood Mkts Inc</nameOfIssuer>
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			<cusip>770700102</cusip>
			<value>40513</value>
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		<infoTable>
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</informationTable>
