<http://webisa.webdatacommons.org/198657237>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/198657237>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/333745315>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/198657237> .
<http://webisa.webdatacommons.org/198657237>	<http://www.w3.org/ns/prov#value>	"R2 and R3 is a hydrogen atom or an alkyl group; R4 is an" .
<http://webisa.webdatacommons.org/prov/333848442>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/198657237> .