[alpha-D-GlcpNAc-(1->7)-L-gro-alpha-D-manHep?-(1->7)-alpha-D-Glcp-(1->3)-L-gro-alpha-D-manHep?-(1->3)]-L-gro-alpha-D-manHep?-(1->5)-alpha-L-3-deoxy-manOct2ulop-onic-(2->6)-beta-D-GlcpNAc-(1->6)-?-D-GlcpNAc(1->