InChI=1/C21H18N4O/c1-12-6-8-17(16-5-4-10-22-20(12)16)25-21(26)15-7-9-18-19(11-15)24-14(3)13(2)23-18/h4-11H,1-3H3,(H,25,26)/f/h25H 9E0E3E75070321B9