[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a yellow-brown liquid with an unpleasant odor. Sinks and mixes with water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][Branch1][Ring1][C][#N][C][=Branch1][C][=O][O]"}]