[{"from": "human", "value": "Please give me some details about this molecule. [Be+2].[N+1][=Branch1][C][=O][Branch1][C][O-1][O-1].[N+1][=Branch1][C][=O][Branch1][C][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is a nitrate of beryllium. Beryllium is a lightweight alkaline earth metal with the atomic number 4. It is a relatively rare element found naturally only combined with other elements in minerals. Nitrite is a toxic compound known to cause methemoglobinemia. (L1137,  L24)"}]