InChI=1/C20H18N2O4S/c1-12-3-8-16(13(2)9-12)21-20-22-19(25)17(27-20)10-14-4-6-15(7-5-14)26-11-18(23)24/h3-10H,11H2,1-2H3,(H2,21,22,23,24,25)/p-2/b17-10+/fC20H16N2O4S/q-2 6CF46AC2E064367C