[beta-L-GalpNAc-(1->4)-[alpha-D-Fucp-(1->3)-beta-D-GlcpNAc-(1->6)]-[beta-L-GalpNAc-(1->4)-alpha-D-Fucp-(1->3)-beta-D-GlcpNAc-(1->3)]-L-GalNAc(?-]-