(1R,2S,3R,4R)-1-[4-(tert-butoxymethyl)-2,3-(isopropylidenedioxy)-cyclopentan-1-yl]-cytosine

Acetic acid (1R,2R,3S,4R)-4-(4-benzoylamino-2-oxo-2H-pyrimidin-1-yl)-2,3-dihydroxy-cyclopentylmethyl ester

(1R,5R)-5-hydroxymethyl-2-cyclopenten-1-ol

(3S,3aS,6aR)-2-oxo-3,3a,4,6a-tetrahydro-2H-cyclopenta[b]furan-3-yl (S)-2-acetoxypropanoate

acetic acid,[(1R,5R)-5-(hydroxymethyl)cyclopent-2-en-1-yl] acetate