InChI=1S/C20H16N6O2S/c1-27-15-9-6-10-16(28-2)17(15)19-25-26-18(23-24-20(26)29-19)14-11-13(21-22-14)12-7-4-3-5-8-12/h3-11H,1-2H3,(H,21,22)