InChI=1/C19H16N4O/c20-18-17-15(13-6-2-1-3-7-13)10-23(19(17)22-12-21-18)16-9-5-4-8-14(16)11-24/h1-10,12,24H,11H2,(H2,20,21,22)/f/h20H2 F8E9B7677E7EDB22