InChI=1/C18H15BrO5S/c1-18(21)16(12-5-9-14(10-6-12)25(2,22)23)15(17(20)24-18)11-3-7-13(19)8-4-11/h3-10,21H,1-2H3/t18-/m1/s1 876D7B3CFE3A7975