InChI=1/C19H20Br2N2O3/c1-11(2)14-5-4-12(3)6-18(14)26-10-19(25)23-22-9-13-7-17(24)16(21)8-15(13)20/h4-9,11,24H,10H2,1-3H3,(H,23,25)/b22-9+/f/h23H 8CBF6C4FF77F56C0