InChI=1/C20H18N2O3/c1-14-20(24)19(15(13-23)11-21-14)12-22-16-7-9-18(10-8-16)25-17-5-3-2-4-6-17/h2-12,23-24H,13H2,1H3 4B63518B1BA6E775