InChI=1/C19H25NO2/c1-16-4-8-18(9-5-16)21-14-3-12-20-13-15-22-19-10-6-17(2)7-11-19/h4-11,20H,3,12-15H2,1-2H3/p+1/fC19H26NO2/h20H/q+1 1BE20A9066EE79D1