?-D-GlcpA3S-(1->?)-?-D-GalpNAc4S-(1->?)-?-D-GlcpA3S-(1->?)-?-D-GalpNAc4S-(1->?)[?-L-Fucp-(1->?)]-?-D-GlcpA-(1->?)-?-D-GalpNAc4S(1->