InChI=1/C18H12N4O4/c23-12-6-3-7-21(12)14-10-5-2-1-4-9(10)13-15(14)22-8-11(18(25)26)19-16(22)17(24)20-13/h1-6,8,14H,7H2,(H,20,24)(H,25,26)/p-1/t14-/m0/s1/fC18H11N4O4/h20H/q-1 1D8CC5CC12E3FA35