Neu5Ac(a2-6)GalNAc(?1-?)GlcNAc(?1-?)Man(a1-3/6)[Neu5Ac(a2-6)Gal(?1-?)GlcNAc(?1-?)Man(a1-3/6)]Man(b1-4)GlcNAc(b1-4)GlcNAc(b1-
