Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-N-benzoyl-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-N-benzoyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyl-N-(2-methyl-1-oxopropyl)guanylylmethylene(methylimino)-(3′→5′)-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyl-N-(2-methyl-1-oxopropyl)guanylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-N-(2-methyl-1-oxopropyl)-, 3′-(4-amino-4-oxobutanoate)

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyl-N-(2-methyl-1-oxopropyl)guanylylmethylene(methylimino)-(3′→5′)-N-benzoyl-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyl-N-(2-methyl-1-oxopropyl)guanylylmethylene(methylimino)-(3′→5′)-N-benzoyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Uridine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Guanosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-N-(2-methyl-1-oxopropyl)-, 3′-(4-amino-4-oxobutanoate)

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-N-benzoyl-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-N-benzoyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Uridine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Guanosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-N-(2-methyl-1-oxopropyl)-, 3′-(4-amino-4-oxobutanoate)

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-N-benzoyl-5-methyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-N-benzoyl-2′-O-methyl-, 3′-(4-amino-4-oxobutanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-5-methyl-2′-O-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-N-(2-methyl-1-oxopropyl)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-N-benzoyl-5-methyl-2′-O-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-N-benzoyl-2′-O-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyl-N-(2-methyl-1-oxopropyl)guanylylmethylene(methylimino)-(3′→5′)-5-methyl-2′-O-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyl-N-(2-methyl-1-oxopropyl)guanylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-N-(2-methyl-1-oxopropyl)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]