Question: Which opioid along with Subutex makes up the two best known of the thevinol, orvinol, or bridged oripavine derivatives?
Sentence (from "Bentley compounds"): The Bentley compounds are a class of semi-synthetic opioids that were first synthesized by K. W. Bentley by Diels-Alder reaction of thebaine with various dienophiles.
Relevant evidence: No