[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a potassium salt. It contains a tetracyanonickelate(4-)."}, {"from": "gpt", "value": "[C-1][#N].[C-1][#N].[C-1][#N].[C-1][#N].[K+1].[K+1].[K+1].[K+1].[Ni]"}]