[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][=Branch1][C][=O][N][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Branch2][Ring1][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][C][=Branch1][C][=O][O][C][C][=Branch1][C][=O][O][C].[Cl]"}, {"from": "gpt", "value": "The molecule is the hydrochloride salt form of remifentanil, a synthetic anilidopiperidine derivative and short-acting opiate agonist with analgesic and anesthetic properties. Remifentanil selectively binds to and activates the mu-opioid receptor, thereby producing analgesia, respiratory depression, miosis, reduced gastrointestinal motility, and euphoria."}]