Propanamide, N-[9-[(3aR,4R,6R,6aR)-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]tetrahydro-2,2-dioxidofuro[3,4-d]-1,3,2-dioxathiol-4-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[6,9-dihydro-6-oxo-9-[(2R,5S)-tetrahydro-3,3-dihydroxy-5-(hydroxymethyl)-2-furanyl]-1H-purin-2-yl]-2-methyl-

L-Leucine, N-[(2R,5S)-2-[1,6-dihydro-2-[(2-methyl-1-oxopropyl)amino]-6-oxo-9H-purin-9-yl]-2,5-dihydro-5-(hydroxymethyl)-3-furanyl]-, methyl ester