2-O-acetyl-3,4,6-tri-O-benzyl-alpha-D-mannopyranosyl-(1-6)-2,4-di-O-acetyl-3-O-allyl-beta-D-mannopyranosyl-(1-4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-beta-D-glucopyranosyl-(1-4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-beta-D-glucopyranosyl azide