InChI=1/C13H11NO4S2/c1-7(12(16)17)18-9-4-2-8(3-5-9)6-10-11(15)14-13(19)20-10/h2-7H,1H3,(H,16,17)(H,14,15,19)/p-2/b10-6+/t7-/m0/s1/fC13H9NO4S2/q-2 1022F11DC3F54D32