Thymidine, [P(S)]-P-[[3-[bis[2-(benzoyloxy)ethyl]amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-

Thymidine, [P(S)]-P-[[2-[bis[2-(benzoyloxy)ethyl]amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-

Thymidine, [P(S)]-P-[[3-[bis[2-(benzoyloxy)ethyl]amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(S)]-P-[[2-[bis[2-(benzoyloxy)ethyl]amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(S)]-P-[[3-[bis(2-hydroxyethyl)amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(S)]-P-[[2-[bis(2-hydroxyethyl)amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[[3-[bis[2-[(trifluoroacetyl)amino]ethyl]amino]propyl]amino]-P-deoxythymidylyl-(3′→5′)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[[2-[bis[2-[(trifluoroacetyl)amino]ethyl]amino]ethyl]amino]-P-deoxythymidylyl-(3′→5′)-

Thymidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[[3-[bis[2-[(trifluoroacetyl)amino]ethyl]amino]propyl]amino]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[[2-[bis[2-[(trifluoroacetyl)amino]ethyl]amino]ethyl]amino]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[[2-[bis[2-[(trifluoroacetyl)amino]ethyl]amino]ethyl]amino]-P-deoxythymidylyl-(3′→5′)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, [P(R)]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[[3-[bis[2-[(trifluoroacetyl)amino]ethyl]amino]propyl]amino]-P-deoxythymidylyl-(3′→5′)-

Thymidine, [P(R)]-P-[[3-[bis[2-(benzoyloxy)ethyl]amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, [P(R)]-P-[[2-[bis[2-(benzoyloxy)ethyl]amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, [P(R)]-P-[[3-[bis[2-(benzoyloxy)ethyl]amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-

Thymidine, [P(R)]-P-[[2-[bis[2-(benzoyloxy)ethyl]amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-

Thymidine, [P(R)]-P-[[3-[bis[2-(benzoyloxy)ethyl]amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(R)]-P-[[2-[bis[2-(benzoyloxy)ethyl]amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(R)]-P-[[3-[bis(2-hydroxyethyl)amino]propyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, [P(R)]-P-[[2-[bis(2-hydroxyethyl)amino]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxythymidylyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-