InChI=1S/C20H22N6O/c1-12-11-14(7-9-21)19(27)13(2)18(12)25-17-8-10-23-20(26-17)24-16-5-3-15(22)4-6-16/h3-11,27H,21-22H2,1-2H3,(H2,23,24,25,26)/b9-7-