?-D-GlcpNAc-(1->?)-?-D-GlcpA-(1->?)[?-D-GlcpNAc-(1->?)]-?-D-GlcpA-(1->?)-?-D-Galf-(1->?)[?-L-Rhap-(1->?)-?-D-Manp-(1->?)]-?-D-Manp(1->