[{"from": "human", "value": "Could you provide a description of this molecule? [C][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "The molecule appears as an odorless, white solid. Can cause damaging frostbite. Noncombustible and nontoxic. Liquefies at -109 \u00b0F. Can asphyxiate by displacement of air. Used as a refrigerant."}]