Benzyl 6-O-acetyl-3-O-benzyl-4-O-{4-O-[2,4-di-O-acetyl-3-O-(3-O-benzyl-2,4,6-tri-O-(3,4,6-tri-O-benzyl-2-deoxy-2-phthalimido-b-D-glucopyranosyl)-a-D-mannopyranosyl)-6-O-(3-O-benzyl-2,4,6-tri-O-(3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-b-D-glucopyranosyl)-a-D-mannopyranosyl)-b-D-mannopyranosyl]-3,6-di-O-benzyl-2-deoxy-2-phthalimido-b-D-glucopyranosyl}-2-deoxy-2-phthalimido-b-D-thioglucopyranoside