[{"from": "human", "value": "Could you provide a description of this molecule? [C][O][C][=Branch1][C][=O][Cl]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquid with a pungent odor. Flash point 54 \u00b0F. Corrosive to metals and tissue. Vapors heavier than air. Very toxic by inhalation. Used to make other chemicals and insecticides."}]