[{"from": "human", "value": "Describe this molecule. [SH1-1].[SH1-1].[SH1-1].[SH1-1].[SH1-1].[Fe].[Fe].[Fe].[Fe].[Ni]"}, {"from": "gpt", "value": "The molecule is a nickel-iron-sulfur cluster in which the nickel and iron atoms are linked by bridging sulfur atoms with the ratio Ni:Fe:S = 1:4:5. It has a role as a cofactor."}]