InChI=1/C15H12N4O2S/c20-10-5-3-4-9(8-10)16-15(22)19-18-13-11-6-1-2-7-12(11)17-14(13)21/h1-8,20H,(H2,16,19,22)(H,17,18,21)/f/h16,19,21H/b18-13- 48BCB29D0DEC12B8