[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a mineral with formula of Ca6Si6O17(OH)2. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Xon."}, {"from": "gpt", "value": "[O].[O][Si][=Branch1][C][=O][O].[Ca]"}]