1	BJ8	Double cubane cluster	1.000
2	S5Q	Fefe cofactor	0.750
3	8P8	C fe7 s8 V	0.700
4	CFM	Fe-mo-S cluster	0.700
5	D6N	Fev	0.700
6	ICE	Iron-sulfur-molybdenum cluster with interstitial carbon	0.700