InChI=1/C21H19NO2/c23-19-13-7-12-18-21(19)17(15-8-3-1-4-9-15)14-20(24)22(18)16-10-5-2-6-11-16/h1-6,8-11,17H,7,12-14H2/t17-/m1/s1 A5F6F1B67F46D9EA