[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquid with a penetrating unpleasant odor. Density 0.94 g / cm3. Freezing point -93.2 \u00b0F (-34 \u00b0C). Boiling point 365.7 \u00b0F (185.4 \u00b0C). Flash point 192 \u00b0F (88.9 \u00b0C). Corrosive to metals and tissue."}]