WURCS=2.0/4,4,3/[uxxxxm_2*NCC/3=O_4*NCC/3=O][uxxxxA_2*NCC/3=O][uxxxxA][Axxh]/1-2-3-4/a?|b?|c?|d?}-{a?|b?|c?|d?_a?|b?|c?|d?}-{a?|b?|c?|d?_a?|b?|c?|d?}-{a?|b?|c?|d?