InChI=1/C14H20N4O/c15-14-17-11-10(8-16-12(11)13(19)18-14)7-9-5-3-1-2-4-6-9/h8-9,16H,1-7H2,(H3,15,17,18,19)/f/h18H,15H2 1DF5581A70E27A7B