[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a hydrate that is the heptahydrate form of ferrous ammonium sulfate. It contains a ferrous ammonium sulfate (anhydrous)."}, {"from": "gpt", "value": "[NH4+1].[NH4+1].[O].[O].[O].[O].[O].[O].[O].[O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Fe+2]"}]