InChI=1/C19H16N4O4/c1-23-10-13(9-20-23)19(25)22-15-4-2-3-14(8-15)21-18(24)12-5-6-16-17(7-12)27-11-26-16/h2-10H,11H2,1H3,(H,21,24)(H,22,25)/f/h21-22H 9E91D7890C990B11