[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch1][#Branch1][O][C][=Branch1][C][=O][Cl][Cl]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquid with a penetrating, irritating odor. Denser than water. Contact may irritate skin, eyes and mucous membranes. Toxic by ingestion, inhalation and skin absorption. Used to make other chemicals."}]