InChI=1/C18H23N3O3/c1-2-24-17(22)16-15(13-10-6-7-11-14(13)20-16)21-18(23)19-12-8-4-3-5-9-12/h6-7,10-12,20H,2-5,8-9H2,1H3,(H2,19,21,23)/f/h19,21H 02F8B1E276792160