<http://webisa.webdatacommons.org/prov/474235877>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/121517692> .
<http://webisa.webdatacommons.org/prov/465356517>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/121517692> .
<http://webisa.webdatacommons.org/121517692>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/121517692>	<http://www.w3.org/ns/prov#value>	"Preferably, R4 is an alkyl group having 1 to about 6 carbon atoms." .
<http://webisa.webdatacommons.org/121517692>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .