3,4,5aβ,7,8,8aβ-Hexahydro-8β-(tert-butyldimethylsilyloxy)-7α-(tert-butyldimethylsilyloxymethyl)-4-thioxo-2H-furo[2',3':4,5]oxazolo[3,2-a]-1,3,5-triazin-2-one | 3,4,5aβ,7,8,8aβ-Hexahydro-8β-(tert-butyldimethylsilyloxy)-7α-(tert-butyldimethylsilyloxymethyl)-4-thioxo-2H-furo[2',3':4,5]oxazolo[3,2-a]-1,3,5-triazin-2-one | |