[alpha-L-GalpNAc-(1->4)-alpha-L-GalpNAc-(1->4)-beta-D-Glcp-(1->3)-alpha-L-GalpNAc-(1->4)]-alpha-L-GalpNAc-(1->4)-alpha-L-GalpNAc-(1->3)-beta-D-QuipNAc4NAc(1->