InChI=1S/C34H26Br4N4O8/c35-21-9-17-1-3-27(21)49-29-15-19(11-23(37)31(29)43)6-8-40-33(45)25(41-47)13-18-2-4-28(22(36)10-18)50-30-16-20(12-24(38)32(30)44)14-26(42-48)34(46)39-7-5-17/h1-5,7,9-12,15-16,43-44,47-48H,6,8,13-14H2,(H,39,46)(H,40,45)/b7-5-,41-25-,42-26+