[{"from": "human", "value": "Please give me some details about 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 a stereoisomer of propoxyphene in the form of 2S, 3R enantiomer. It was sold as an antitussive, but it was removed from the market in the 70s. Levopropoxyphene was developed by Lilly and FDA approved on March 21st, 1962. This drug presented different dosages and it was administered as a capsule or suspension."}]