Neu5Ac(a2-4/6)Gal(?1-4)GlcNAc(?1-2)Man(?1-3)[Neu5Ac(a2-4/6)Gal(?1-4)GlcNAc(?1-2)Man(?1-6)]Man(b1-4)GlcNAc(b1-4)GlcNAc(b1-
