[alpha-D-GlcpNAc-(1->6)-alpha-D-Rhap2,4Ac2-(1->3)-alpha-D-Rhap2Ac-(1->3)-beta-D-QuipNAc4Ac-(1->4)-beta-D-GlcpNAc3Ac-(1->4)]-alpha-L-Manp-(1->5)-L-3-deoxy-manOct2ulo-onic(?->