<http://webisa.webdatacommons.org/prov/141546618>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/154411117> .
<http://webisa.webdatacommons.org/prov/140589058>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/154411117> .
<http://webisa.webdatacommons.org/154411117>	<http://www.w3.org/ns/prov#value>	"Each of R1 and R2 is a hydrogen, an alkyl group having 1 to 3 C or an alkoxy group having 1 to 3 C." .
<http://webisa.webdatacommons.org/154411117>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.ca> .
<http://webisa.webdatacommons.org/154411117>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .