InChI=1S/C21H23BrN2O7S2/c1-4-30-21(25)19-17(12-32(26)13-8-6-5-7-9-13)24(3)16-10-15(22)20(31-33(27,28)29)14(11-23-2)18(16)19/h5-10,23H,4,11-12H2,1-3H3,(H,27,28,29)/p-1