InChI=1/C20H18N4O2/c21-19-18-17(14-2-1-3-16(26)10-14)11-24(20(18)23-12-22-19)15-6-4-13(5-7-15)8-9-25/h1-7,10-12,25-26H,8-9H2,(H2,21,22,23)/f/h21H2 4F8AB0DA4E8A352B