InChI=1S/C20H19N5O3/c1-26-15-10-14(11-16(27-2)18(15)28-3)23-20-22-12-13-7-9-25(19(13)24-20)17-6-4-5-8-21-17/h4-12H,1-3H3,(H,22,23,24)