1	ICS	Iron-sulfur-molybdenum cluster with interstitial carbon	1.000
2	CFM	Fe-mo-S cluster	0.944
3	ICE	Iron-sulfur-molybdenum cluster with interstitial carbon	0.944
4	CFN	Fe(7)-mo-S(9)-N cluster	0.895
5	ICG	Iron-sulfur-molybdenum cluster with interstitial carbon with selenium incorporated	0.895
6	S5Q	Fefe cofactor	0.895
7	ICZ	Iron-sulfur-molybdenum cluster with interstitial carbon	0.889
8	8P8	C fe7 s8 V	0.842
9	D6N	Fev	0.750
10	ICH	Iron-sulfur-molybdenum cluster with interstitial carbon with selenium incorporated	0.714