InChI=1S/C19H27NO3/c1-15(2)14-20-19(23)10-8-6-4-3-5-7-9-16-11-12-17(21)18(22)13-16/h7-13,15,21-22H,3-6,14H2,1-2H3,(H,20,23)/b9-7+,10-8+