InChI=1/C13H18N4O2/c14-11-10(16-19-17-11)12(18)15-13-4-7-1-8(5-13)3-9(2-7)6-13/h7-9H,1-6H2,(H2,14,17)(H,15,18)/f/h15H,14H2 F48BE3A6AB6AEBA7