[{"from": "human", "value": "Provide a brief overview of this molecule. [OH1-1].[OH1-1].[O-1][Si][Branch1][C][O-1][Branch1][C][O-1][O][Si][=Branch1][C][=O][O][Si][Branch1][C][O-1][Branch1][C][O-1][O][Si][=Branch1][C][=O][O][Si][Branch1][C][O-1][Branch1][C][O-1][O][Si][Branch1][C][O-1][Branch1][C][O-1][O][Si][=Branch1][C][=O][O][Si][Branch1][C][O-1][Branch1][C][O-1][O-1].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Ca+2].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a mineral with formula of \u25fbCa2Mg5Si8O22(OH)2 or \u25fbCa2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Tr."}]