[beta-L-GalpNAc-(1->4)-[D-gro-alpha-L-3-deoxy-galNon2ulop5NAc-onic-(2->3)-beta-L-Gal?-(1->4)]-beta-D-Glcp-(1->2)-L-gro-alpha-D-manHepp-(1->5)-beta-D-Glcp-(1->4)-L-gro-alpha-D-manHepp6PEtn-(1->5)]-L-3-deoxy-manOct2ulo-onic(?->