Synonyms: Acetamide, N-(1-(3-cyano-3-deoxy-2,5-bis-O-((1,1-dimethylethyl)dimethylsilyl)-beta-D-xylofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl)-;Acetamide, N-[1-[3-cyano-3-deoxy-2,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-.beta.-D-xylofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-;N4-Acetyl-1-(2,5-bis-O-(t-butyldimethylsilyl)-3-C-cyano-3-deoxy-beta-D-xylopentofuranosyl)cytosine;N4-Acetyl-1-[2,5-bis-O-(t-butyldimethylsilyl)-3-C-cyano-3-deoxy-.beta.-D-xylopentofuranosyl]cytosine