InChI=1/C10H11BrN4O4/c11-6-1-5(2-7-8(6)19-4-18-7)3-13-10(17)15-14-9(12)16/h1-2H,3-4H2,(H3,12,14,16)(H2,13,15,17)/f/h13-15H,12H2 3F93ED919F0C64DD