InChI=1S/C23H25NO2/c1-15(2)7-6-8-16(3)11-12-19-22-20(13-17(14-25)23(19)26)18-9-4-5-10-21(18)24-22/h4-5,7,9-11,13-14,24,26H,6,8,12H2,1-3H3/b16-11-