N-[1-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-[2-cyanoethoxy-[di(propan-2-yl)amino]phosphanyl]oxy-3-fluorooxolan-2-yl]-2-oxopyrimidin-4-yl]acetamide
N-Acetyl-5'-O-(4,4-dimethoxytrityl)-2'-deoxy-2'-fluorocytidine-3'-(2-cyanoethyl-N,N-diisopropyl)phosphoramidite