[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a colorless to yellow solid. Sinks and slowly mixes with water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][=C][C][=C][Branch1][N][C][=Branch1][Ring2][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][N+1][=Branch1][C][=O][O-1]"}]