?-L-Rhap2,4Ac2-(1->?)-?-L-Rhap2Ac-(1->?)-?-D-QuipNAc4Ac-(1->?)[?-D-GlcpNAc-(1->?)]-?-D-GlcpNAc3Ac-(1->?)-?-D-Manp-(1->?)-D-Kdn(?->