InChI=1S/C17H20O8S/c1-10(2)5-6-12-13(18)9-14-16(17(12)20)11(8-15(19)25-14)4-3-7-24-26(21,22)23/h5,8-9,18,20H,3-4,6-7H2,1-2H3,(H,21,22,23)