beta-D-Allopyranoside, 2-(dimethylamino)-3a,5,6,6a-tetrahydro-4-hydroxy-6-(hydroxymethyl)-4H-cyclopentoxazol-5-yl 2-(acetylamino)-4-O-(2-(acetylamino)-2-deoxy-beta-D-allopyranosyl)-2-deoxy-, (3aalpha,4beta,5beta,6alpha,6aalpha)-