alpha-L-Araf-(1->2)[alpha-L-Araf-(1->3)[[5)-alpha-L-Araf-(1->5)-alpha-L-Araf-(1->5)]-alpha-L-Araf-(1->5)-alpha-L-Araf-(1->5)]-alpha-L-Araf-(1->5)-alpha-L-Araf-(1->]n