[{"from": "human", "value": "Provide a brief overview of this molecule. [C-1][#N].[C-1][#N].[K+1].[Cu+1]"}, {"from": "gpt", "value": "The molecule appears as a white crystalline solid. Denser than water. Contact may cause irritation to skin, eyes, and mucous membranes. May be toxic by ingestion and inhalation."}]