InChI=1/C22H20N4O/c1-13-8-9-20-16(10-13)11-18(14(2)24-20)22(27)26-23-12-19-15(3)25-21-7-5-4-6-17(19)21/h4-12,25H,1-3H3,(H,26,27)/b23-12+/f/h26H 011C40A754A23945