alpha-D-NeupAc-(2->8)-alpha-D-NeupAc-(2->3)[alpha-D-NeupAc-(2->8)-alpha-D-NeupAc-(2->3)-beta-D-Galp-(1->3)-beta-D-GalpNAc-(1->4)]-beta-D-Gal?-(1->4)-beta-D-Glcp-(1->
