<http://webisa.webdatacommons.org/191006578>	<http://www.w3.org/ns/prov#value>	"Preferably, R2 is a methyl group." .
<http://webisa.webdatacommons.org/191006578>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/107271844>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/191006578> .
<http://webisa.webdatacommons.org/191006578>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .