InChI=1/C15H12N4O5/c1-15(10-5-3-7-23-10)13(20)19(14(21)17-15)8-11-16-12(18-24-11)9-4-2-6-22-9/h2-7H,8H2,1H3,(H,17,21)/t15-/m0/s1/f/h17H BBD2B309E4935F27