InChI=1/C19H18N2O3/c1-19(18(23)21-15-7-2-3-8-16(15)24-19)17(22)20-14-10-9-12-5-4-6-13(12)11-14/h2-3,7-11H,4-6H2,1H3,(H,20,22)(H,21,23)/t19-/m0/s1/f/h20-21H 7F5F449CEF9616F9