InChI=1/C13H12BrN3O3S/c14-11-8-10(21(15,19)20)6-7-12(11)17-13(18)16-9-4-2-1-3-5-9/h1-8H,(H2,15,19,20)(H2,16,17,18)/f/h16-17H,15H2 909DBE2BE9C83C3A