About: http://webisa.webdatacommons.org/285453176

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	a is a single bond, b is a double bond and R2 is absent; R1 is --H, aryl, or C1-3 alkyl unsubstituted or substituted with aryl; R3 is --H, methyl or ethyl; and n is zero through 10.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es