InChI=1S/C20H17N7O2/c1-2-3-8-27-25-20(24-26-27)13-12(9-21)16(22)14-15(17(13)23)19(29)11-7-5-4-6-10(11)18(14)28/h4-7H,2-3,8,22-23H2,1H3