[[4)-beta-D-Xylp-(1->4)-beta-D-Xylp-(1->4)-beta-D-Xylp-(1->4)-beta-D-Xylp-(1->4)-beta-D-Xylp-(1->4)-beta-D-Xylp-(1->4)-alpha-D-GlcpA4Me-(1->2)-beta-D-Xylp-(1->]-