[{"from": "human", "value": "Describe this molecule. [C][=Branch1][C][=O][Branch1][C][O-1][O-1].[O].[O].[Mg+2]"}, {"from": "gpt", "value": "The molecule is a mineral with formula of MgCO3\u00b72H2O. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is  ."}]