[{"from": "human", "value": "Describe this molecule. [O].[O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ca+2].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a calcium salt and a hydrate."}]