1	IMU	Phosphoric acid mono-[5-(2-amino-4-oxo-4,5-dihydro-3h-pyrrolo[3,2-D]pyrimidin-7-yl)-3,4-dihydroxy-pyrrolidin-2-ylmethyl] ester	1.000
2	IRP	(1s)-1(9-deazahypoxanthin-9yl)1,4-dideoxy-1,4-imino-D-ribitol-5-phosphate	0.958
3	A1IXI	9-deazaguanosine-5'-monophosphate	0.920
4	IMG	1,4-dideoxy-1,4-imino-1-(S)-(9-deazaguanin-9-yl)-D-ribitol	0.760
5	FMP	Formycin-5'-monophosphate	0.741
6	5NT	2-azanyl-7-[(2~{S},3~{R},5~{S})-5-(hydroxymethyl)-3-oxidanyl-pyrrolidin-2-yl]-3,5-dihydropyrrolo[3,2-D]pyrimidin-4-one	0.720
7	IMH	1,4-dideoxy-4-aza-1-(S)-(9-deazahypoxanthin-9-yl)-D-ribitol	0.720