[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a sesquiterpenoid."}, {"from": "gpt", "value": "[C][/C][=Branch2][Ring1][Branch1][=C][/C][C][C][Branch1][=C][C][C][C][C][Branch1][Ring2][C][Ring1][Branch1][C][Ring1][#Branch1][=C][C][/C][O][C][=Branch1][C][=O][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]