InChI=1/C16H20N4O2/c1-9(2)14-12(21-3)6-10(7-13(14)22-4)5-11-8-19-16(18)20-15(11)17/h6-8H,1,5H2,2-4H3,(H4,17,18,19,20)/f/h17-18H2 215B9EF3FA2421CC