InChI=1/C13H15BrN4O2S/c1-2-9-3-5-11(6-4-9)18-21(19,20)12-7-10(14)8-16-13(12)17-15/h3-8,18H,2,15H2,1H3,(H,16,17)/f/h17H 2BA4BC388AD851E4