Acetic acid (2R,3R,4R,5S)-5-(tert-butyl-diphenyl-silanyloxymethyl)-4-[1,3]dithian-2-yl-2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester

1-((2R,3R,4S,5S)-3-hydroxy-4-(((((2R,3R,4R,5R)-3-hydroxy-4-methoxy-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methoxy)(methyl)amino)methyl)-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione