About: http://webisa.webdatacommons.org/355380932

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 preferred embodiments, R1 is a group that can be removed in vivo; R1 is hydrogen; R1 is alkyl; R1 is methyl; R2 is methyl; R3 is methylene; R4 is aryl; or R4 is phenyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au