InChI=1S/C20H19NO2/c22-20(23)17-11-6-10-16-15-9-4-5-12-18(15)21(19(16)17)13-14-7-2-1-3-8-14/h1-3,6-8,10-11H,4-5,9,12-13H2,(H,22,23)