(3aS,5R,6S,7S,7aS)-6,7-Dihydroxy-5-hydroxymethyl-2-methyl-tetrahydro-[1,3]dioxolo[4,5-b]pyran-2-carbonitrile

methyl 2,3,4-tri-O-acetyl-6-O-[2,4-di-O-acetyl-3,6-di-O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-α-D-mannopyranosyl]-α-D-mannopyranoside