InChI=1/C18H24N4O/c1-3-22(17-7-5-4-6-15(17)2)13-12-20-18(23)21-14-16-8-10-19-11-9-16/h4-11H,3,12-14H2,1-2H3,(H2,20,21,23)/f/h20-21H 538EB268F773D0D4