[{"from": "human", "value": "Describe this molecule. [O-1][Mn][=Branch1][C][=O][=Branch1][C][=O][=O].[O-1][Mn][=Branch1][C][=O][=Branch1][C][=O][=O].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a purple crystalline solid. It is used as a disinfectant and deodorizer, in water purification, and for many other uses."}]