InChI=1/C13H10Br2N4O4/c14-7-1-6(12(22)9(15)2-7)5-16-19-11(21)4-8-3-10(20)18-13(23)17-8/h1-3,5,22H,4H2,(H,19,21)(H2,17,18,20,23)/b16-5+/f/h17-19H E6B10811201A4044