?-6-deoxy-?-Hex?-(1->?)[?-?-Hex?-(1->?)]-?-?-Hex?-(1->?)-?-?-Hex?NAc-(1->?)[?-D-Neup5Ac-(2->?)-?-D-Neup5Ac-(2->?)]-?-?-Hex?-(1->?)-?-?-Hex?-(1->
