InChI=1/C16H19NO2/c1-2-9-17-10-7-16(8-11-17)12-13-5-3-4-6-14(13)15(18)19-16/h2-6H,1,7-12H2/p+1/fC16H20NO2/h17H/q+1 A685B170E3F26251