InChI=1/C18H16N4O/c1-21-15-9-8-13(10-16(15)22(2)18(21)23)14-11-19-20-17(14)12-6-4-3-5-7-12/h3-11H,1-2H3,(H,19,20)/f/h20H E14BBB9939FB0C28