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