InChI=1/C17H14N2O4S/c20-17(18-21)9-5-4-6-14-10-12-15(13-11-14)19-24(22,23)16-7-2-1-3-8-16/h1-3,5,7-13H,(H3,18,19,20,21)/p-1/fC17H13N2O4S/h18,21H/q-1/b9-5+ 2B15C1244078E0FA