InChI=1/C15H14N4O/c16-11-7-4-8-12-14(11)18-15(19(12)9-13(17)20)10-5-2-1-3-6-10/h1-8H,9,16H2,(H2,17,20)/f/h17H2 FE44B5D74F2F85B5