InChI=1S/C22H31NO4/c1-22(2,25)16-23-21(24)12-10-8-6-4-3-5-7-9-11-18-13-14-19-20(15-18)27-17-26-19/h6,8-9,11,13-15,25H,3-5,7,10,12,16-17H2,1-2H3,(H,23,24)/b8-6+,11-9+