[{"from": "human", "value": "Provide a brief overview of this molecule. [C-1][#N].[C-1][#N].[C-1][#N].[C-1][#N].[K+1].[K+1].[K+1].[K+1].[Ni]"}, {"from": "gpt", "value": "The molecule is a potassium salt. It contains a tetracyanonickelate(4-)."}]