[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule appears as a clear colorless liquid with a pineapple-like odor. Flash point 78 \u00b0F. Less dense than water and insoluble in water. Vapors heavier than air."}, {"from": "gpt", "value": "[C][C][C][C][=Branch1][C][=O][O][C][C]"}]