[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][=O]"}, {"from": "gpt", "value": "The molecule appears as a clear liquid with a pungent odor. Flash point 20 \u00b0F. Boiling point 75.7 \u00b0F (Hawley's). Less dense than water and insoluble in water. Vapors heavier than air."}]