InChI=1/C21H16N6O/c28-20(15-6-10-22-11-7-15)25-17-4-1-5-18(13-17)26-21-24-12-8-19(27-21)16-3-2-9-23-14-16/h1-14H,(H,25,28)(H,24,26,27)/f/h25-26H 1926722E24EA36CA