alpha-D-Neup5Ac-(2->3)-beta-D-Galp-(1->3)[beta-D-Galp-(1->?)[alpha-L-Fucp-(1->?)]-beta-D-GlcpNAc-(1->?)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->6)]-?-D-GalpNAc-(1->