Diisopropyl-phosphoramidous acid (2R,3R,4R,5R)-5-(4-acetylamino-2-oxo-2H-pyrimidin-1-yl)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-methoxy-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester
N-(1-((2R,3R,4R,5R)-5-((bis(4-Methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxy-3-methoxytetrahydrofuran-2-yl)-2-oxo-1,2-dihydropyrimidin-4-yl)acetamide
N4-acetyl-2'-O-methyl cytidine