About: http://webisa.webdatacommons.org/181820487

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	As the lower alkyl group represented by R4 or R5 in the above-mentioned formula (II), an alkyl group having 1 to 6 carbon atoms, such as methyl group or ethyl group is preferably employed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com