InChI=1/C21H17BrN4O4/c22-13-1-3-14(4-2-13)26-20(29)17(19(28)25-21(26)30)11-23-8-7-12-10-24-18-6-5-15(27)9-16(12)18/h1-6,9-11,23-24,27H,7-8H2,(H,25,28,30)/b17-11+/f/h25H 900D21BD4DBD794E