C27H28F2N4O8
1-(2,4-difluorobenzyl)-2,3-dihydro-1H-imidazo[1,2-a]pyridin-4-ium
3'-O-acetylthymidine
C27H30N4O8
Acetic acid (2R,3S,5R)-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-[1-phenyl-2-(pyridin-2-ylamino)-ethoxycarbonyloxymethyl]-tetrahydro-furan-3-yl ester