WURCS=2.0/4,5,5/[h222h][a2112h-1a_1-5][a2112h-1b_1-4_6*OCC/3=O][a2112h-1b_1-4]/1-2-3-2-4/a2-b1_b3-c1_c2-d1_d3-e1_a5-e3*OPO*/3O/3=O~n