1	D6N	Fev	1.000
2	8P8	C fe7 s8 V	0.889
3	ICZ	Iron-sulfur-molybdenum cluster with interstitial carbon	0.833
4	ICE	Iron-sulfur-molybdenum cluster with interstitial carbon	0.789
5	ICG	Iron-sulfur-molybdenum cluster with interstitial carbon with selenium incorporated	0.750
6	ICS	Iron-sulfur-molybdenum cluster with interstitial carbon	0.750
7	S5Q	Fefe cofactor	0.750
8	BJ8	Double cubane cluster	0.700
9	CFM	Fe-mo-S cluster	0.700