InChI=1/C17H16N4O4S/c1-24-14-6-4-10(7-15(14)25-2)16-19-20-17(26)21(16)18-9-11-3-5-12(22)8-13(11)23/h3-9,22-23H,1-2H3,(H,20,26)/b18-9+/f/h20H 2FBDD2B3BF5EB69F