<http://webisa.webdatacommons.org/290997429>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/55193980>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/290997429> .
<http://webisa.webdatacommons.org/290997429>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/290997429>	<http://www.w3.org/ns/prov#value>	"In a preferred embodiment, at least one of R6, R7 and R8 is other than OH, unsubstituted alkyl, unsubstituted aryl, unsubstituted heteroaryl and unsubstituted heterocycloalkyl." .