beta-D-2-deoxy-eryPenf1N-(1->5)-beta-D-2-deoxy-eryPenf1N-(1->5)-beta-D-2-deoxy-eryPenf1N-(1->5)-beta-D-2-deoxy-eryPenf1N-(1->5)-beta-D-2-deoxy-eryPenf1N-(1->5)-beta-D-2-deoxy-eryPenf1N(1->