alpha-L-Rhap-(1->2)-alpha-L-Rhap-(1->5)-beta-D-Kdop7Ac-(2->3)-[3)-alpha-L-Rhap-(1->2)-alpha-L-Rhap-(1->5)-beta-D-Kdop7Ac-(2->]n-alpha-L-Rhap-(1->2)-alpha-L-Rhap-(1->5)-beta-D-Kdop(2->