alpha-D-NeupAc-(2->3),beta-D-Galp-(1->4)[alpha-L-Fucp-(1->3)]-?-D-GlcpNAc-(1->?)[beta-D-Galp-(1->4)-?-D-GlcpNAc-(1->?)]-beta-D-Galp-(1->3)-D-GalNAc(?->