N-[(6S,7S,8R,8aR)-6-benzyloxy-2-phenyl-8-[(2R,3S,4S,5R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]acetamide