About: http://webisa.webdatacommons.org/89870387

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	with the proviso that, when X is a direct bond or --CO--, R1 is other than methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com