[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a colorless liquid with a distinctive acrid odor. Flash point 130 \u00b0F. Boiling point 286 \u00b0F. Freezing point 53 \u00b0F. Corrosive to metals and tissue. Prolonged exposure to fire or heat can cause polymerization. If polymerization takes place in a closed container, violent rupture may occur. The inhibitor (usually hydroquinone) greatly reduces the tendency to polymerize."}]