[beta-D-Glcp-(1->4)-[alpha-D-GlcpN-(1->2)-L-gro-alpha-D-manHep?-(1->3)-L-gro-alpha-D-manHep?-(1->5)]-alpha-L-3-deoxy-manOct2ulop-onic-(2->4)-alpha-L-3-deoxy-manOct2ulop-onic-(2->6)]-beta-D-GlcpN-(1->6)-?-D-GlcpN(1->