Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[[1-[(1,1-dimethylethyl)diphenylsilyl]-1H-indol-3-yl]acetyl]amino]-1-propynyl]uridylyl-(3′→5′)-N-benzoyl-2′-deoxy-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[[1-[(1,1-dimethylethyl)diphenylsilyl]-1H-indol-3-yl]acetyl]amino]-1-propynyl]uridylyl-(3′→5′)-N-benzoyl-2′-deoxy-, 3′-(4-oxopentanoate)

Cytidine, N-benzoyl-2′-deoxy-, 5′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 3′-(4-oxopentanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[[1-[(1,1-dimethylethyl)diphenylsilyl]-1H-indol-3-yl]acetyl]amino]-1-propynyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[[1-[(1,1-dimethylethyl)diphenylsilyl]-1H-indol-3-yl]acetyl]amino]-1-propynyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)thymidylyl-(3′→5′)-2′-deoxy-5-[3-[[(acetyloxy)acetyl]amino]-1-propynyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)thymidylyl-(3′→5′)-2′-deoxy-5-[3-[[(acetyloxy)acetyl]amino]-1-propynyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)thymidylyl-(3′→5′)-2′-deoxy-5-[3-[[(acetyloxy)acetyl]amino]-1-propynyl]-, 3′-(4-oxopentanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[(acetyloxy)acetyl]amino]-1-propynyl]-, 3′-(4-oxopentanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[(acetyloxy)acetyl]amino]-1-propynyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[(acetyloxy)acetyl]amino]-1-propynyl]-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]acetyl]amino]-1-propynyl]uridylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]acetyl]amino]-1-propynyl]uridylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]acetyl]amino]-1-propynyl]uridylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-(4-oxopentanoate)

Guanosine, 2′-deoxy-N-(2-methyl-1-oxopropyl)-, 5′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite] 3′-(4-oxopentanoate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]acetyl]amino]-1-propynyl]-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]acetyl]amino]-1-propynyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[1-oxo-6-[(trifluoroacetyl)amino]hexyl]amino]-1-propynyl]uridylyl-(3′→5′)-N-benzoyl-2′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[1-oxo-6-[(trifluoroacetyl)amino]hexyl]amino]-1-propynyl]uridylyl-(3′→5′)-N-benzoyl-2′-deoxy-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-deoxy-5-[3-[[1-oxo-6-[(trifluoroacetyl)amino]hexyl]amino]-1-propynyl]uridylyl-(3′→5′)-N-benzoyl-2′-deoxy-, 3′-(4-oxopentanoate)