InChI=1/C13H12N4O2/c1-2-7-10-11(17-16-7)6-4-3-5-8(15-13(14)19)9(6)12(10)18/h3-5H,2H2,1H3,(H,16,17)(H3,14,15,19)/f/h15,17H,14H2 BDBCC865FF8E2D25