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