InChI=1S/C21H19N7O/c22-19-18-20(27-21(23)26-19)24-10-14(25-18)11-28-16-4-2-1-3-12(16)5-6-13-9-15(29)7-8-17(13)28/h2-10,16,29H,1,11H2,(H4,22,23,24,26,27)/t16-/m0/s1