1-[5-O-(tert-butyldiphenylsilyl)-3-deoxy-3-C-(4,5-dihydro-5-methyl-1,3,5-dithiazin-2-yl)-β-D-arabino-pentofuranosyl]thymine

1-((2R,3S,4S,5S)-3-hydroxy-4-(5-methyl-1,3,5-dithiazinan-2-yl)-5-((trityloxy)methyl)tetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione