InChI=1/C15H19N3O2/c1-16-15(20)17-14(19)11-18-9-7-13(8-10-18)12-5-3-2-4-6-12/h2-7H,8-11H2,1H3,(H2,16,17,19,20)/f/h16-17H D221D270656CD9CE