InChI=1/C21H21NO2/c1-15-8-12-20(13-9-15)24-16(2)21(23)22(3)19-11-10-17-6-4-5-7-18(17)14-19/h4-14,16H,1-3H3/t16-/m0/s1 D1902F71EB75EA13