InChI=1S/C19H27NO4/c1-19(2,24)15-10-8-14(9-11-15)17(21)20-16(18(22)23)12-13-6-4-3-5-7-13/h3-7,14-16,24H,8-12H2,1-2H3,(H,20,21)(H,22,23)/t14-,15?,16-/m1/s1