InChI=1/C20H15BrN4O4S/c21-13-3-1-4-16(11-13)25-20(27)18(19(26)23-25)12-15-5-2-10-24(15)14-6-8-17(9-7-14)30(22,28)29/h1-12H,(H,23,26)(H2,22,28,29)/b18-12-/f/h23H,22H2 6CA8D51494E20A07