InChI=1/C20H16Cl2O3S/c1-11(2)13-5-3-4-6-18(13)26-19-16(23)10-17(25-20(19)24)12-7-8-14(21)15(22)9-12/h3-11,23H,1-2H3/p-1/fC20H15Cl2O3S/h23h/q-1 C3B9267CEE15D84E