1 HY8 (2~{S})-4-[[(2~{S},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl-[3-[[9-[(2~{S},3~{R},4~{S},5~{S})-5-(hydroxymethyl)-3,4-bis(oxidanyl)oxolan-2-yl]purin-6-yl]amino]propyl]amino]-2-azanyl-butanoic acid 1.000 2 I0C (2~{S})-4-[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl-[3-[[9-[(2~{R},5~{R})-5-(hydroxymethyl)-3,4-bis(oxidanyl)oxolan-2-yl]-7~{H}-purin-6-yl]amino]propyl]amino]-2-azanyl-butanoic acid 1.000 3 KXW (2~{S})-4-[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl-[3-(pyridin-2-ylamino)propyl]amino]-2-azanyl-butanoic acid 0.714