InChI=1/C21H18N2O3/c1-14-22-17(13-12-15-8-4-2-5-9-15)19(20(24)23-14)18(21(25)26)16-10-6-3-7-11-16/h2-13,18H,1H3,(H,25,26)(H,22,23,24)/p-1/b13-12+/t18-/m1/s1/fC21H17N2O3/h23H/q-1 19FF2B96526D6A20