InChI=1/C21H19N5/c1-15-12-16(2)14-18(13-15)24-21-23-9-8-19(25-21)26-11-10-22-20(26)17-6-4-3-5-7-17/h3-14H,1-2H3,(H,23,24,25)/f/h24H 57055E446D6B58F1