InChI=1/C20H18Br2N2O5/c21-13-11-16-19(23-6-9-27-10-7-23)18(29-20(16)17(22)12-13)5-8-28-15-3-1-14(2-4-15)24(25)26/h1-5,11-12,19H,6-10H2/b18-5+/t19-/m0/s1 7925A172E84CC861