[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][=Branch2][Ring1][Ring2][=C][Branch1][N][C][=Branch1][Ring2][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][N+1][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule appears as a yellow colored needle-like solid. Insoluble in water and denser than water. Toxic by ingestion and inhalation. May irritate skin and eyes. Used to make dyes and ink."}]