[{"from": "human", "value": "Describe this molecule. [C][N][Branch1][C][C][C][=Branch1][C][=O][Cl]"}, {"from": "gpt", "value": "The molecule appears as a colorless to yellow liquid with a pungent odor. Burns to skin, eyes and mucous membranes. A lachrymator. Used to make dyes and pharmaceuticals."}]