InChI=1/C13H15BrN4O2S/c1-9(10-2-4-11(14)5-3-10)18-21(19,20)13-8-16-7-6-12(13)17-15/h2-9,18H,15H2,1H3,(H,16,17)/t9-/m0/s1/f/h17H B892EA0B410D8F3A