WURCS=2.0/4,5,4/[a2122h-1b_1-5][a2112h-1b_1-5][Aad21122h-2a_2-6_5*NCCO/3=O][a344h-1b_1-5]/1-2-3-2-4/a4-b1_b3-c2_c4-d1_d6-e1