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