InChI=1S/C19H27NO4/c1-13(12-21)15-7-9-16(10-8-15)18(22)20-17(19(23)24)11-14-5-3-2-4-6-14/h2-6,13,15-17,21H,7-12H2,1H3,(H,20,22)(H,23,24)/t13?,15?,16-,17-/m1/s1