InChI=1/C21H19N3O2/c1-13-20(16-6-2-3-7-18(16)23-13)21(24-14-5-4-10-22-12-14)17-9-8-15(25)11-19(17)26/h2-12,21,23-26H,1H3/t21-/m0/s1 7DDB3C8A4B19E336