This work unambiguously establishes the overall conformation of the ti
tle molecule, C36H37N3O9S, which includes a thiirane ring. The configu
ration is alpha-D-glucofuranose with the furanosyl ring T4(3); the imi
dazolidine-2-one group assumes a form in which the fused C2' atom devi
ates by 0.14 angstrom from the best plane.