InChI=1/C18H18N2O4S/c19-18(21)12-7-9-20(10-8-12)25(22,23)13-5-6-17-15(11-13)14-3-1-2-4-16(14)24-17/h1-6,11-12H,7-10H2,(H2,19,21)/f/h19H2 DAB2FB3C801D24AB