InChI=1/C16H21NO2/c1-2-11-19-16-8-7-13-5-3-4-6-14(13)15(16)12-17-9-10-18/h3-8,17-18H,2,9-12H2,1H3/p+1/fC16H22NO2/h17H/q+1 57D37E12AD1FF86D