InChI=1/C15H16N4/c1-2-6-10(5-1)18-15-14-13(16-9-17-14)11-7-3-4-8-12(11)19-15/h3-4,7-10H,1-2,5-6H2,(H,16,17)(H,18,19)/f/h16,18H 1D56F367B5C22EC7