[{"from": "human", "value": "Describe this molecule. [NH4+1].[N+1][=Branch1][C][=O][Branch1][C][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is a nitrate of ammonium. It is commonly used in agriculture as a high-nitrogen fertilizer, and it has also been used as an oxidizing agent in explosives. Nitrite is a toxic compound known to cause methemoglobinemia. (L1137, L1619)"}]