<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">		<infoTable>
			<nameOfIssuer>ARTHROCARE CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>43136100</cusip>
			<value>3971</value>
			<shrsOrPrnAmt>
				<sshPrnamt>115009</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1,2</otherManager>
			<votingAuthority>
				<Sole>115009</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CELGENE CORP</nameOfIssuer>
			<titleOfClass>RIGHT 12/31/2030</titleOfClass>
			<cusip>151020112</cusip>
			<value>12948</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1747375</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1,2</otherManager>
			<votingAuthority>
				<Sole>1747375</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
</informationTable>
