InChI=1/C13H10Br2N2O3/c14-9-4-8(20-13(9)15)5-16-7-1-2-11-10(3-7)17-12(18)6-19-11/h1-4,16H,5-6H2,(H,17,18)/f/h17H 4AB6975DD4EB5F4F