InChI=1/C17H20N2O3/c1-22-16-8-7-14(9-15(16)20)10-18-12-17(21)19-11-13-5-3-2-4-6-13/h2-9,18,20H,10-12H2,1H3,(H,19,21)/f/h19H A11A4A4006932CC4