InChI=1S/C20H19N5O2/c1-14-12-17-20(27)24(16-8-5-10-22-19(16)25(17)23-14)13-18(26)21-11-9-15-6-3-2-4-7-15/h2-8,10,12H,9,11,13H2,1H3,(H,21,26)