InChI=1/C18H20N2O2/c1-20(13-14-6-3-2-4-7-14)10-11-22-17-9-5-8-16-15(17)12-18(21)19-16/h2-9H,10-13H2,1H3,(H,19,21)/f/h19H 6A0697A359A54425