[{"from": "human", "value": "Describe this molecule. [S-2].[S-2].[Fe+2].[Cu+2]"}, {"from": "gpt", "value": "The molecule is a sulfide mineral with formula CuFeS2. Chalcopyrite is the most important copper ore It is a sulfide mineral, a member of iron(2+) sulfides and a copper sulfide."}]