InChI=1/C14H13BrN2O3/c1-8-5-13(18)20-12-6-10(3-4-11(8)12)17-14(19)16-7-9(2)15/h3-6H,2,7H2,1H3,(H2,16,17,19)/f/h16-17H 3A9F3B36DE47A52B