[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][Branch2][Ring1][=Branch1][C][=Branch1][=C][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][N][N+1][=Branch1][C][=O][O-1][N+1][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule is a synthetic substance that is used in explosives. Nitrite is a toxic compound known to cause methemoglobinemia. (L1137,  L199)"}]