beta-D-GlcpNAc-(1->2)[?-sugar-(?->3)[alpha-D-GalpNAc-(1->4)]-beta-D-GalpNAc-(1->3)]-alpha-D-Galp-(1->3)-L-gro-alpha-D-manHepp-(1->3)[beta-D-Glcp-(1->4)]-L-gro-alpha-D-manHepp6PEtn-(1->5)-alpha-D-Kdop(2->