InChI=1/C13H14Br2N2O3/c1-13(16,6-2-3-6)12(20)17-10-8(11(18)19)4-7(14)5-9(10)15/h4-6H,2-3,16H2,1H3,(H,17,20)(H,18,19)/t13-/m1/s1/f/h16-17H F49CCD0587083F40