[beta-D-Glcp-(1->4)-beta-D-Glcp-(1->4)-[beta-D-Glcp-(1->3)-[alpha-D-Glc?NAc-(1->2)-L-gro-alpha-D-manHepp6,7PEtn2-(1->3)]-L-gro-alpha-D-manHepp-(1->5)]-alpha-L-3-deoxy-manOct2ulop-onic-(2->4)-alpha-L-3-deoxy-manOct2ulop-onic(2-]-