[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a mineral with formula of CaMgSi2O6. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Di."}, {"from": "gpt", "value": "[O-1][Si][=Branch1][C][=O][O-1].[O-1][Si][=Branch1][C][=O][O-1].[Mg+2].[Ca+2]"}]