[{"from": "human", "value": "Generate a molecule based on the given description. The molecule appears as a clear colorless liquid. Insoluble in water and less dense than water. Vapors heavier than air. Used as a solvent."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][C][C][Branch1][C][C][Branch1][C][C][O][C]"}]