InChI=1/C19H16N4O2S/c1-21-18-3-2-4-19(22-18)23-26(24,25)17-11-9-16(10-12-17)15-7-5-14(13-20)6-8-15/h2-12H,1H3,(H2,21,22,23)/f/h21-22H 5B9D56C5040C6976