InChI=1S/C20H22N6O2/c1-12-10-13(6-8-21)19(28)16(11-27)18(12)25-17-7-9-23-20(26-17)24-15-4-2-14(22)3-5-15/h2-10,27-28H,11,21-22H2,1H3,(H2,23,24,25,26)/b8-6-