InChI=1S/C21H31NO3/c1-17(2)16-22-21(24)12-10-8-6-4-5-7-9-11-18-13-14-19(23)20(15-18)25-3/h6,8-9,11,13-15,17,23H,4-5,7,10,12,16H2,1-3H3,(H,22,24)/b8-6+,11-9+