alpha-L-Araf-(1->5)-alpha-L-Araf-(1->3)[[4)-beta-D-GlcpA-(1->2)-alpha-D-Manp-(1->4)]-beta-D-GlcpA-(1->2)[alpha-L-Araf-(1->5)-alpha-L-Araf-(1->3)]-alpha-D-Manp-(1->]n