WURCS=2.0/2,2,1/[a1221m-1a_1-5_2*OSO/3=O/3=O_4*OSO/3=O/3=O][a1221m-1a_1-5_2*OSO/3=O/3=O_3*OSO/3=O/3=O_4*OSO/3=O/3=O]/1-2/a3-b1