InChI=1/C21H20N4O/c1-3-15-4-6-16(7-5-15)19-13-21(25(24-19)14(2)26)17-8-9-18-20(12-17)23-11-10-22-18/h4-12,21H,3,13H2,1-2H3/t21-/m1/s1 EEB6413547702FF7