InChI=1/C15H10Br2Cl2N2O3/c16-10-3-8(4-11(17)15(10)23)6-20-21-14(22)7-24-13-2-1-9(18)5-12(13)19/h1-6,23H,7H2,(H,21,22)/b20-6+/f/h21H D8F2A2D6A67D0291