1	51N	5-O-[(R)-hydroxy(phosphonooxy)phosphoryl]-1-O-phosphono-alpha-D-ribofuranose	1.000
2	CU0	[(2~{R},3~{S},4~{S})-3,4-bis(oxidanyl)oxolan-2-yl]methyl phosphono hydrogen phosphate	0.773
3	RI2	1,5-di-O-phosphono-alpha-D-ribofuranose	0.739