InChI=1/C20H27NO4/c1-20(2,3)17(22)18(23)21-13-7-12-16(21)19(24)25-14-8-11-15-9-5-4-6-10-15/h4-6,9-10,16H,7-8,11-14H2,1-3H3/t16-/m1/s1 B0F48B3C428CE043