1	CLF	Fe(8)-S(7) cluster	1.000
2	UFF	Fe(7)-S(7) cluster	0.933
3	A1JPW	Fe(8)-S(7) cluster, p1+ state conformer a	0.875
4	A1JPX	Fe(8)-S(7) cluster, p1+ state conformer B	0.875
5	LPJ	Fe(6)-S(7) cluster	0.867
6	1CL	Fe(8)-S(7) cluster, oxidized	0.765