<http://webisa.webdatacommons.org/prov/465350672>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/125292381> .
<http://webisa.webdatacommons.org/125292381>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/125292381>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/125292381>	<http://www.w3.org/ns/prov#value>	"preferred Compound,each of R1 and R2 is a methyl group;R3b" .