InChI=1/C15H13N4O4S/c1-2-10-4-6-13(19(20)21)8-15(10)24(22,23)18-12-5-3-11-9-16-17-14(11)7-12/h3-9H,2H2,1H3,(H,16,17)/q-1/f/h16H B6B296AED497CBF3