[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C@][Branch2][Ring2][Branch1][C@H1][C][C][=C][Branch2][Ring1][Branch1][C@][Ring1][=Branch1][Branch1][Ring2][C][Ring1][#Branch2][C][C][N][Ring1][=Branch2][C][C][C][C][C][Ring1][Ring2][C][=C][Branch1][Branch1][C][=C][Ring1][S][O][O]"}, {"from": "gpt", "value": "The molecule is a synthetic opioid which is used as a nasal spray for treatment of migraine headaches and parenterally as a narcotic analgesic for moderate-to-severe pain or as an adjunct to general anesthesia. Butorphanol has not been linked to serum enzyme elevations during therapy or to clinically apparent liver injury."}]