SMILES: [C-]#N.[C-]#[O+].[C-]#[O+].[Fe]
Description: The molecule is an iron coordination entity consisting of two carbonyl and one cyano group coordinated to a central iron atom. The product of HydG, which is then passed onto HydE and HydF to form the H-cluster of the [FeFe]-hydrogenase enzymes. It is a metal carbonyl and an iron coordination entity.