InChI=1/C19H18N4O4/c1-12-4-2-7-16-21-13(11-23(12)16)10-20-18(24)19(25)22-14-5-3-6-15-17(14)27-9-8-26-15/h2-7,11H,8-10H2,1H3,(H,20,24)(H,22,25)/f/h20,22H 492F61B55D0F3DDF