InChI=1/C13H12N4O3S/c18-11(8-2-3-9-10(6-8)20-7-19-9)14-12-15-16-13-17(12)4-1-5-21-13/h2-3,6H,1,4-5,7H2,(H,14,15,18)/f/h14H AE7DA5CAFF064E53