InChI=1S/C22H31NO4/c1-17(2)15-23-22(25)14-19(24)10-8-6-4-3-5-7-9-18-11-12-20-21(13-18)27-16-26-20/h7-13,17,19,24H,3-6,14-16H2,1-2H3,(H,23,25)/b9-7+,10-8+