[{"from": "human", "value": "Describe this molecule. [C][#Branch1][C][#N][Hg+1].[C][#Branch1][C][#N][Hg+1].[O-2]"}, {"from": "gpt", "value": "The molecule appears as a white crystalline solid. Can explode on prolonged exposure to fire, heat or percussion. For the purpose of desensitization 33% mercuric oxycyanide is mixed with 67% mercuric cyanide. Toxic by inhalation and by ingestion. Used in medicine."}]