InChI=1/C18H19NO2/c1-3-13-10-15(18(20)19-12(13)2)8-9-16-11-14-6-4-5-7-17(14)21-16/h4-7,10-11H,3,8-9H2,1-2H3,(H,19,20)/f/h19H 29F923718AB0DCD6