?-D-NeupAc-(2->?)-?-D-Gal?-(1->?)-?-D-Gal?NAc-(1->?)[?-D-NeupAc-(2->?)]-?-D-Gal?-(1->?)-L-gro-?-D-manHep?-(1->?)[?-D-Glc?-(1->?)]-L-gro-?-D-manHep?6PEtn-(1->?)-D-Kdn(?->