InChI=1S/C22H22N4O2/c1-25-13-17(18-5-3-4-6-19(18)25)14-26(2)21(28)10-7-15-11-16-8-9-20(27)24-22(16)23-12-15/h3-7,10-13H,8-9,14H2,1-2H3,(H,23,24,27)/b10-7+