[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch1][C][C][Branch1][C][C][C][=Branch1][C][=O][O][O][C][Branch1][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a colorless liquid that solidifies below -19 \u00b0C. Decomposes at 70 \u00b0C. Flammable and a dangerous fire risk. Heating may cause explosion. Used as a polymerization initiator."}]