[beta-D-GlcpA3S-(1->3)-beta-D-GalpNAc4S-(1->4)-beta-D-GlcpA3S-(1->3)-beta-D-GalpNAc4S-(1->4)-alpha-L-Fucp-(1->3)-beta-D-GlcpA-(1->3)]-?-D-GalpNAc4S(1->