[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a hydrate with formula Na2S.9H2O. It contains a sodium sulfide (anhydrous)."}, {"from": "gpt", "value": "[O].[O].[O].[O].[O].[O].[O].[O].[O].[Na+1].[Na+1].[S-2]"}]