[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a hydrate of nickel sulfate containing nickel (in +2 oxidation state), sulfate and water moieties in the ratio 1:1:7. It contains a nickel sulfate."}, {"from": "gpt", "value": "[O].[O].[O].[O].[O].[O].[O].[O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ni+2]"}]