[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Alternaria alternata with data available."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C@H1][C][C@][Branch2][Ring1][P][C][=Branch1][=Branch1][=C][C@@H1][Ring1][=Branch1][O][C][=C][Branch1][=C][C][=Branch1][#Branch2][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][C][O][C][=Branch1][C][=O][O][Ring1][P][C]"}]