alpha-D-NeupAc-(2->3)[alpha-D-NeupAc-(2->3)-beta-D-Galp-(1->3)-beta-D-GalpNAc-(1->4)]-beta-D-Galp-(1->3)-L-gro-alpha-D-manHepp-(1->3)[beta-D-Glcp-(1->4)]-L-gro-alpha-D-manHep?6PEtn-(1->5)-D-Kdn(?->