InChI=1/C16H20N2O2/c17-10-9-16-18-11-15(20-16)12-5-7-14(8-6-12)19-13-3-1-2-4-13/h5-8,11,13H,1-4,9-10,17H2/p+1/fC16H21N2O2/h17H/q+1 2116744AB492E9E8