[5′-O-DMTr-5-Me-2′-dC(Bz)](P-thio-pCyEt)[2′-dT-3′-CE-Phosphoramidite]

[5'-O-(4, 4'-dimethoxytrityl)-5-methyl-2'-dC(benzoyl)](P-thio-pCyEt)[2'-deoxythymidine-3'-cyanoethyl-Phosphoramidite]