1	FMC	(1s)-1-(7-amino-1h-pyrazolo[4,3-D]pyrimidin-3-yl)-1,4-anhydro-D-ribitol	1.000
2	FM2	2-(7-amino-6-methyl-3h-pyrazolo[4,3-D]pyrimidin-3-yl)-5-hydroxymethyl-tetrahydro-furan-3,4-diol	0.950
3	FMB	Formycin B	0.900
4	FM1	2-hydroxymethyl-5-(7-methylamino-3h-pyrazolo[4,3-D]pyrimidin-3-yl)-tetrahydro-furan-3,4-diol	0.857
5	9DI	9-deazainosine	0.810
6	UA2	3,4-pyrrolidinediol,2-(4-amino-5h-pyrrolo[3,2-D]pyrimidin-7-yl)-5-(hydroxymethyl)-2s,3s,4r,5r	0.810
7	FMP	Formycin-5'-monophosphate	0.750
8	IMH	1,4-dideoxy-4-aza-1-(S)-(9-deazahypoxanthin-9-yl)-D-ribitol	0.727