[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a mineral with formula of MgSiO3 or Mg2Si2O6. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Cen."}, {"from": "gpt", "value": "[O-1][Si][=Branch1][C][=O][O-1].[Mg+2]"}]