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