InChI=1S/C21H23BrN2O6S2/c1-4-29-21(25)19-17(12-31-13-8-6-5-7-9-13)24(3)16-10-15(22)20(30-32(26,27)28)14(11-23-2)18(16)19/h5-10,23H,4,11-12H2,1-3H3,(H,26,27,28)/p-1