About: http://webisa.webdatacommons.org/77017536

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	Preferably a1 ranges from about 3 to 500; f ranges from 2 to 4; R1 is a residue of pentaerythritol; and R1??? and R1??? are each a methyl and isopropyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com