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