About: http://webisa.webdatacommons.org/414018229

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	Y is either NH, S, or O, and R is an alkyl, branched alkyl, benzyl or aryl substituent (the two R groups are the same or different), or a metal cation. 10.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com