Benzoic acid (2R,3S,4R)-4-azido-2-(tert-butyl-dimethyl-silanyloxymethyl)-1-oxo-tetrahydro-1λ4-thiophen-3-yl ester

Benzoic acid (2R,3S,4R)-5-(4-acetylamino-2-oxo-2H-pyrimidin-1-yl)-4-azido-2-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-thiophen-3-yl ester