[{"from": "human", "value": "Generate a molecule based on the given description. The molecule appears as a colorless liquid. Less dense than water and insoluble in water. May irritate skin, eyes, and mucous membranes. May be lethal by Inhalation. Used to make pharmaceuticals and pesticides."}, {"from": "gpt", "value": "[C][C][N][=C][=O]"}]