[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a mineral with formula of Zn2+CO3 or Zn(CO3). The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Smt."}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][C][O][O].[Zn+2]"}]