[alpha-L-GalpNAc-(1->2)-beta-D-Quip3N-(1->4)-[alpha-L-GalpNAc-(1->2)-beta-D-Quip3N-(1->4)]-beta-D-Quip3N-(1->4)-alpha-L-GalpNAc-(1->2)-beta-D-Qui?3N(1-]-