InChI=1/C16H23NO3/c1-2-3-9-17(10-11-18)13-15-6-4-5-14(12-15)7-8-16(19)20/h4-8,12,18H,2-3,9-11,13H2,1H3,(H,19,20)/b8-7+/f/h17H 5D6A3F78DEF6D375