About: http://webisa.webdatacommons.org/292260503

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	In the general formulae, each of R11, R12 and R13 is a hydrogen atom, or a independent substituted or non substituted alkyl group or a halogen atom.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com