InChI=1S/C17H20O8S/c1-9(2)4-5-12-13(18)8-14(19)16-11(7-15(20)24-17(12)16)6-10(3)25-26(21,22)23/h4,7-8,10,18-19H,5-6H2,1-3H3,(H,21,22,23)