[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a mineral with formula of Ag1+2S2- or Ag2S. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Aca."}, {"from": "gpt", "value": "[SH1-1].[Ag].[Ag+1]"}]