[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Melanelia stygia, Cladonia furcata, and other organisms with data available."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch2][Branch1][=Branch2][=C][Branch2][Branch1][Ring1][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][=C][Branch1][Ring2][O][Ring1][Branch2][C][=Branch2][Ring1][=C][=C][Branch2][Ring1][Branch1][C][=Branch1][P][=C][Ring1][#Branch1][C][O][C][=Branch1][C][=O][/C][=C][/C][=Branch1][C][=O][O][O][C][=Branch1][C][=O][O][C][C][=O][O]"}]