InChI=1/C18H16N4/c1-12-6-5-7-13(2)17(12)21-18-16-10-19-11-22(16)15-9-4-3-8-14(15)20-18/h3-11H,1-2H3,(H,20,21)/f/h21H 8D5AA7730E0FE477