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