InChI=1S/C21H19N5O2/c1-13-4-2-5-15(10-13)23-19(27)12-25-17-6-3-9-22-20(17)26-18(21(25)28)11-16(24-26)14-7-8-14/h2-6,9-11,14H,7-8,12H2,1H3,(H,23,27)