((2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9(6H)-yl)-3-hydroxytetrahydrofuran-2-yl)methyl 4-((N-(9H-fluoren-2-yl)acetamido)oxy)-4-oxobutanoate

(N-Acetyl-N-(((2',3'-isopropylidene-5'-guanosinyl)-3-carbonyl)propanoyloxy))-2-aminofluorene