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