alpha-L-GalpA-(1->4)-D-gro-alpha-L-3-deoxy-galNon2ulop5NAc-onic-(2->3)-beta-L-GalpA-(1->3)-beta-D-QuipNAc-(1->4)-[4)-alpha-L-GalpA-(1->4)-D-gro-alpha-L-3-deoxy-galNon2ulop5NAc-onic-(2->3)-beta-L-GalpA-(1->3)-beta-D-QuipNAc-(1->]-D-Sed(?->