[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a prostanoid."}, {"from": "gpt", "value": "[C][C][Branch2][Ring2][#C][C@@H1][Branch1][P][C][Branch1][Branch1][C][Ring1][Branch1][O][C][/C][=C][\\C][C][=Branch1][C][=O][O][/C][=C][/C][Branch2][Ring1][Branch1][C][O][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][Branch1][C][F][Branch1][C][F][F][O][O]"}]