InChI=1/C19H15N7/c1-12-16(13-6-4-5-9-17(13)22-12)10-20-23-18-14-7-2-3-8-15(14)19-24-21-11-26(19)25-18/h2-11,20H,1H3,(H,23,25)/b16-10+/f/h23H 8ABA755B2FAB86C5