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