InChI=1/C20H15NO2/c21-12-17-18(23)8-9-20(14-4-2-1-3-5-14)11-13-10-15(22)6-7-16(13)19(17)20/h1-7,10,22H,8-9,11H2/t20-/m1/s1 D58400846E02E946