[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a mineral with formula of Mg5(CO3)4(OH)2\u00b74H2O. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Hmgs."}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][C][O][O].[Mg+2]"}]