[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a mineral with formula of CaCl2\u00b76H2O. The corresponding IMA (International Mineralogical Association) number is IMA1965-015. The IMA symbol is Atc."}, {"from": "gpt", "value": "[O].[O].[O].[O].[O].[O].[Cl-1].[Cl-1].[Ca+2]"}]