[beta-L-Galp-(1->4)-beta-D-GlcpNAc-(1->3)-beta-L-Galp-(1->4)-beta-D-Glcp-(1->4)-alpha-D-GlcpNAc-(1->2)-alpha-?-Hepp-(1->3)-alpha-?-Hepp-(1->5)]-L-3-deoxy-manOct2ulo-onic(?->