InChI=1S/C16H18O9S/c1-2-3-7-4-5-9(26-7)8(6-10(17)18)24-16-13(21)11(19)12(20)14(25-16)15(22)23/h4-5,8,11-14,16,19-21H,6H2,1H3,(H,17,18)(H,22,23)