[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquid with a penetrating and unpleasant odor. Flash point 170 \u00b0F. Corrosive to metals and tissue. Density 8.0 lb /gal."}]