Methyl 3-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinecarboxylate

7-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-5-[2-(10-methyl-10H-phenothiazin-3-yl)ethynyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-5-(10-methyl-10H-phenothiazin-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine