InChI=1S/C16H18O9S/c1-24-16-5-9(2-3-13(16)18)4-11(25-26(21,22)23)8-12-14(19)6-10(17)7-15(12)20/h2-3,5-7,11,17-20H,4,8H2,1H3,(H,21,22,23)