1 C84 [(2r,3r,4s,5s,6r)-6-(hydroxymethyl)-2,4,5-tris(oxidanyl)oxan-3-yl]oxy-N-[9-[(2r,3s,5r)-5-[[[(2r,3s)-4-methyl-2,3-bis(oxidanyl)pentanoyl]amino]-oxidanyl-phosphoryl]oxy-3-oxidanyl-oxolan-2-yl]purin-6-yl]phosphonamidic acid 1.000 2 UKU [(2s,3r,4s,5s,6r)-6-(hydroxymethyl)-2,4,5-tris(oxidanyl)oxan-3-yl]oxy-N-[9-[(2r,3s,5r)-5-[[[(2r,3s)-4-methyl-2,3-bis(oxidanyl)pentanoyl]amino]-oxidanyl-phosphoryl]oxy-3-oxidanyl-oxolan-2-yl]purin-6-yl]phosphonamidic acid 1.000