[{"from": "human", "value": "Could you give me a brief overview of this molecule? [O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is a hydrate. It has a role as a cathartic. It contains a sodium sulfate."}]