InChI=1/C16H21N3O/c1-2-3-10-19(12-8-9-12)11-15-17-14-7-5-4-6-13(14)16(20)18-15/h4-7,12H,2-3,8-11H2,1H3,(H,17,18,20)/f/h18H 1A8F5B33FF210916