5'-O-(dimethoxytrityl)-2'-deoxy-2'-C-β-methyl-N4-benzoylcytidine

(2R,3S,5R)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-methylene-2-(((triisopropylsilyl)oxy)methyl)tetrahydrofuran-3-yl ((perfluorobenzoyl)oxy)carbamate