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(2004)N4-benzoyl-2'-deoxycytidine
N4-benzoyl-1-(3',5'-di-O-benzoyl-2'-deoxy-β-D-ribofuranosyl)-cytosine
5-bromo-2'-deoxycytidine
4-N-[N-(2-methoxyethyl)carbamoyl]-5'-O-(4,4'-dimethoxytrityl)-2'-deoxycytidine
4-N-(N-butylcarbamoyl)-5'-O-(4,4'-dimethoxytrityl)-2'-deoxycytidine