[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=Branch1][C][=O][O][C@][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C@H1][Branch1][C][C][C][N][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is the (1S,2R)-(+)-diastereoisomer of propoxyphene. It has a role as an opioid analgesic and a mu-opioid receptor agonist. It is an enantiomer of a levopropoxyphene."}]