InChI=1/C21H18N6O/c1-3-27-19-13(5-4-9-23-19)21(28)26(2)18-7-6-17(25-20(18)27)15-12-24-16-8-10-22-11-14(15)16/h4-12,24H,3H2,1-2H3/p+1/fC21H19N6O/h22H/q+1 1E0A7FE3579EB1C1