<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">		<infoTable>
			<nameOfIssuer>Arris Intl Inc</nameOfIssuer>
			<titleOfClass>SHS</titleOfClass>
			<cusip>G0551A103</cusip>
			<value>203385</value>
			<shrsOrPrnAmt>
				<sshPrnamt>9703500</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>3</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>9703500</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>Editas Medicine Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>28106W103</cusip>
			<value>6256</value>
			<shrsOrPrnAmt>
				<sshPrnamt>256410</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>256410</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>LendingClub Corp</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>52603A109</cusip>
			<value>201</value>
			<shrsOrPrnAmt>
				<sshPrnamt>46832</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>2</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>46832</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
</informationTable>
