InChI=1/C17H18N4O2/c22-11-5-10-18-16-12-6-1-2-7-13(12)19-17(21-16)20-14-8-3-4-9-15(14)23/h1-4,6-9,22-23H,5,10-11H2,(H2,18,19,20,21)/f/h18,20H C0B6B1553CC0B359