InChI=1S/C21H16N4OS/c1-24(2)16-9-13-20-17-12(11-5-3-4-6-14(11)25(16)20)7-8-22-18(17)19-21(13)27-10-15(26)23-19/h3-9H,10H2,1-2H3,(H,23,26)