[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch1][C][=O][Branch1][#Branch2][O][C][Branch1][C][Cl][Branch1][C][Cl][Cl][Cl]"}, {"from": "gpt", "value": "The molecule is a moderately persistent synthetic organic compound, formed by chlorination of methyl chloroformate, that is a respiratory irritant and lachrymator. Trichloromethyl Chloroformate has been used as a chemical warfare agent and is characterized as a colorless liquid with an odor that is like newly mown hay. Exposure occurs by inhalation, ingestion, or contact."}]