<http://webisa.webdatacommons.org/218080291>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/218080291>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/218080291>	<http://www.w3.org/ns/prov#value>	"wherein R3 is a hydrogen atom, a methyl group, an ethyl group, or a" .
<http://webisa.webdatacommons.org/prov/140673815>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/218080291> .
<http://webisa.webdatacommons.org/prov/108625818>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/218080291> .