About: http://webisa.webdatacommons.org/213423162

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	With that said, below is an image of the well known various forms of Methadone: Does the one you have match any of the above?
http://www.w3.org/ns/prov#wasQuotedFrom	medschat.com