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