[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl acetate

O5'-acetyl-O2'-(toluene-4-sulfonyl)-uridine

dfC

1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4-methoxypyrimidin-2(1H)-one