[{"from": "human", "value": "Provide a brief overview of this molecule. [O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ca+2]"}, {"from": "gpt", "value": "The molecule appears as odorless, white powder or colorless, crystalline solid. Crystals sometimes have a blue, gray or reddish tinge or can be brick red. Density: 2.96 g cm-3."}]