1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5-fluoropyrimidine-2,4(1H,3H)-dione
1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-methyltetrahydrofuran-2-yl)-5-fluoropyrimidine-2,4(1H,3H)-dione
5-Fluoro-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione
