InChI=1/C21H18N4O3/c1-28-18-9-7-13(6-8-14-4-2-3-5-17(14)20(26)27)10-15(18)11-16-12-24-21(23)25-19(16)22/h2-5,7,9-10,12H,11H2,1H3,(H,26,27)(H4,22,23,24,25)/f/h24H,22-23H2 E9B1977EB43B4CBE