About: http://webisa.webdatacommons.org/360159294

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 formula, R15 is a hydrogen atom or a methyl group, Rf is a fluoro organic group exemplified by the fluoroalkyl and fluoroalkyloxyfluoroalkylene groups described above.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com