InChI=1/C18H23N3O3/c1-19-18(23)15-8-6-14(7-9-15)11-20(2)13-17(22)21(3)12-16-5-4-10-24-16/h4-10H,11-13H2,1-3H3,(H,19,23)/f/h19H D59727F8A629FC8D