InChI=1S/C19H18N2O3/c22-18(11-14-12-20-16-9-5-4-8-15(14)16)21-17(19(23)24)10-13-6-2-1-3-7-13/h1-9,12,17,20H,10-11H2,(H,21,22)(H,23,24)/p-1