About: http://webisa.webdatacommons.org/126229077

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	(i) D1 and D2 may be the same or different and are each a substituted or unsubstituted alkyl group, D3 is a hydrogen atom, and D4 is a substituent group represented by the below-described formula (2).
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk