2-Amino-7-[2-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[hydroxy[(4-methoxy-1-oxido-2-pyridinyl)methoxy]phosphinyl]-3-O-[[(phenylmethoxy)methoxy]methyl]-β-D-ribofuranosyl]-3,7-dihydro-5-methyl-4H-pyrrolo[2,3-d]pyrimidin-4-one

2-Amino-7-[2-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[hydroxy[(4-methoxy-1-oxido-2-pyridinyl)methoxy]phosphinyl]-3-O-[[(phenylmethoxy)methoxy]methyl]-β-D-ribofuranosyl]-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[propyl N,N-bis(1-methylethyl)phosphoramidite]