About: http://webisa.webdatacommons.org/310042515

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	Additionally, small, hydrophilic groups, such as hydroxy, amino, carboxy and aminocarbonyl, may optionally be substituted on the phenyl ring of such an R2.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com