[beta-L-Glcp-(1->4)-[alpha-L-GlcpNAc-(1->2)-L-gro-alpha-D-manHepp3,7PEtn2-(1->3)-L-gro-alpha-D-manHepp-(1->5)]-alpha-L-3-deoxy-manOct2ulop-onic-(2->4)-alpha-L-3-deoxy-manOct2ulop-onic(2-]-