[{"from": "human", "value": "Please give me some details about this molecule. [O-1][Si][=Branch1][C][=O][O-1].[Mn+2]"}, {"from": "gpt", "value": "The molecule is a mineral with formula of CaMn2+3Mn2+Si5O15 or CaMn3Mn(Si5O15). The corresponding IMA (International Mineralogical Association) number is IMA2019 s.p.. The IMA symbol is Rdn."}]