InChI=1S/C22H27NO/c1-2-23-19-13-14-20(23)16-21(15-19)24-22(17-9-5-3-6-10-17)18-11-7-4-8-12-18/h3-12,19-22H,2,13-16H2,1H3/t19-,20+,21+