About: http://webisa.webdatacommons.org/417476253

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 one embodiment, each R3 is independently (1-4C)alkyl, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl and tert-butyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com