InChI=1/C21H17N3O2/c25-24(26)17-12-10-16(11-13-17)21-14-20(15-6-2-1-3-7-15)22-18-8-4-5-9-19(18)23-21/h1-13,21,23H,14H2/t21-/m1/s1 98D4C8D608B25942