InChI=1S/C16H16O9S/c1-24-16-10(8-13(18)14(19)15(16)20)4-7-12(17)9-2-5-11(6-3-9)25-26(21,22)23/h2-3,5-6,8,18-20H,4,7H2,1H3,(H,21,22,23)