[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@H1][C][N][Branch2][Ring1][Ring2][C][C][C@@][Ring1][=Branch1][Branch1][C][C][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][C][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an Opioid Antagonist. The mechanism of action of alvimopan anhydrous is as an Opioid Antagonist."}]