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