<http://webisa.webdatacommons.org/prov/333262909>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/390393419> .
<http://webisa.webdatacommons.org/390393419>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/390393419>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/390393419>	<http://www.w3.org/ns/prov#value>	"Preferably, R1 is a hydrogen atom or a hydroxyl group." .
<http://webisa.webdatacommons.org/prov/141656357>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/390393419> .