About: http://webisa.webdatacommons.org/12978013

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	R2??? and R3??? are very particularly preferably hydrogen, dimethylamino or methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com