1	HEO	Heme O	1.000
2	HEA	Heme-a	0.983
3	HAS	Heme-as	0.908
4	HCO	2-acetyl-protoporphyrin ix	0.746
5	DDH	[7,12-deacetyl-3,8,13,17-tetramethyl-21h,23h-porphine-2,18-dipropanoato(2-)-n21,n22,n23,n24]-iron	0.733
6	CCH	[7-ethenyl-12-formyl-3,8,13,17-tertramethyl-21h,23h-porphine-2,18-dipropanoato(2)-n21,n22,n23,n24]iron	0.729
7	HEB	Heme B/C	0.729
8	HEC	Heme C	0.729
9	HEM	Protoporphyrin ix containing Fe	0.729
10	HFM	2-formyl-protoporphryn ix	0.729
11	ISW	{3,3'-[(9s)-8,13-diethenyl-3,7,12,17-tetramethyl-9,10-dihydroporphyrin-2,18-diyl-kappa~4~N~21~,N~22~,N~23~,N~24~]dipropanoato(2-)}iron	0.729
12	MH0	Mesoheme	0.729
13	PP9	Protoporphyrin ix	0.712
14	522	Peroxidized heme	0.705
15	HEV	5,8-dimethyl-1,2,3,4-tetravinylporphine-6,7-dipropionic acid ferrous complex	0.705
16	HP5	Peroxidized heme form 2	0.705
17	BW9	Chromium protoporphyrin ix	0.700
18	COH	Protoporphyrin ix containing co	0.700
19	CV0	Mesoporphyrin ix containing RH	0.700
20	GIX	Protoporphyrin ix containing ga	0.700
21	H02	N-methyl protoporphyrin ix 2,4-disulfonic acid	0.700
22	HEG	Protoporphyrin ix containing Mg	0.700
23	HES	Zinc substituted heme C	0.700
24	HNI	Protoporphyrin ix containing ni(II)	0.700
25	MNH	Manganese protoporphyrin ix	0.700
26	MNR	Protoporphyrin ix containing Mn	0.700
27	RUR	[3,3'-(7,12-diethyl-3,8,13,17-tetramethylporphyrin-2,18-diyl-kappa~4~N~21~,N~22~,N~23~,N~24~)dipropanoato(2-)]ruthenium	0.700
28	ZNH	Protoporphyrin ix containing Zn	0.700