methyl 5-[2'-deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxopyrimidine-1-propanoate 3'-(2-cyanoethyl diisopropylphosphoramidite)
N1-(3-aminopropyl)-5-[2'-deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxopyrimidine-1-propanamide
methyl 5-[2'-deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxopyrimidine-1-propanoate