[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch1][Ring1][=N][O][Branch1][C][Cl][Cl]"}, {"from": "gpt", "value": "The molecule is an organic compound with the formula Cl2CNOH. It is a potent chemical weapon, specifically a nettle agent. The compound itself is a colorless solid, but impure samples are often yellowish liquids. It has a strong, disagreeable odor and a violently irritating vapor."}]