WURCS=2.0/6,9,8/[AUd21122h][a11221h-1a_1-5][a11221h-1a_1-?][a2122h-1b_1-5][a2112h-1b_1-5][a2122h-1b_1-5_2*NCC/3=O]/1-2-3-2-4-2-5-6-5/a5-b1_b3-c1_b4-e1_c2-d1_e6-f1_f4-g1_g3-h1_h4-i1