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<http://webisa.webdatacommons.org/312141189>	<http://www.w3.org/ns/prov#value>	"R3 and R4 can be the same or different including H, alkyl such as methyl, ethyl, propyl, isopropyl, butyl, etc." .
<http://webisa.webdatacommons.org/prov/347831189>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/312141189> .
<http://webisa.webdatacommons.org/312141189>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/347831173>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/312141189> .