1	ICZ	Iron-sulfur-molybdenum cluster with interstitial carbon	1.000
2	ICE	Iron-sulfur-molybdenum cluster with interstitial carbon	0.941
3	ICG	Iron-sulfur-molybdenum cluster with interstitial carbon with selenium incorporated	0.889
4	ICS	Iron-sulfur-molybdenum cluster with interstitial carbon	0.889
5	8P8	C fe7 s8 V	0.833
6	CFM	Fe-mo-S cluster	0.833
7	D6N	Fev	0.833
8	ICH	Iron-sulfur-molybdenum cluster with interstitial carbon with selenium incorporated	0.789
9	S5Q	Fefe cofactor	0.789