InChI=1/C22H18N2O3/c1-15-10-12-17(13-11-15)22(25)21-19(16-7-3-2-4-8-16)20(24(26)27)18-9-5-6-14-23(18)21/h2-14,19,21H,1H3/t19-,21+/m0/s1 B0E66B3B46DE3EE9