3-benzyloxycarbonylaminopropyl 6-deoxy-2-O-<2,4-di-O-benzoyl-3-O-(3-O-benzyl-4-O-chloroacetyl-2-O-methyl-α-L-fucopyranosyl)-α-L-rhamnopyranosyl>-3,4-O-isopropylidene-α-L-talopyranoside