[{"from": "human", "value": "What can you tell me about 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 a peripherally acting \u03bc opioid antagonist. It is used to avoid postoperative ileus following small or large bowel resection and accelerates the gastrointestinal recovery period."}]