InChI=1/C13H12BrN3O3S/c14-11-3-1-2-4-12(11)17-13(18)16-9-5-7-10(8-6-9)21(15,19)20/h1-8H,(H2,15,19,20)(H2,16,17,18)/f/h16-17H,15H2 1BDA5B3A56DECF97