[{"from": "human", "value": "Provide a description of this molecule. [N+1][=Branch1][C][=O][Branch1][C][O-1][O-1].[N+1][=Branch1][C][=O][Branch1][C][O-1][O-1].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a mineral with formula of Ca(N5+O3)2\u00b74H2O or Ca(NO3)2\u00b74H2O. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Ncal."}]