Synonyms: 4H-Pyrrolo(2,3-d)pyrimidin-4-one, 2-amino-7-(2,3-dideoxy-3-fluoro-5-O-(hydroxy((hydroxy(phosphonooxy)phosphinyl)oxy)phosphinyl)-b-D-erythro-pentofuranosyl)-1,7-dihydro-;4H-Pyrrolo[2,3-d]pyrimidin-4-one, 2-amino-7-[2,3-dideoxy-3-fluoro-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-b-D-erythro-pentofuranosyl]-1,7-dihydro-