[alpha-D-Rhap-(1->6)-beta-D-Glcp-(1->4)-[beta-D-GlcpNAc-(1->2)-alpha-D-Glcp-(1->3)-alpha-L-GalpN-(1->3)]-L-gro-alpha-D-manHep?6P-(1->3)-L-gro-alpha-D-manHep?2,4P2-(1->5)-alpha-L-3-deoxy-manOct2ulop-onic-(2->4)-?-L-3-deoxy-manOct2ulop-onic(2-]-