About: http://webisa.webdatacommons.org/337190132

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	Preferably, R is an unsubstituted phenyl ring or a chloro- or C1-4alkyl-substituted phenyl ring, X is oxygen, R1 and R2 are each a methyl radical and Y is hydroxyl or morpholine.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca