InChI=1S/C20H26O6S/c1-25-19(13-9-17-7-11-18(21)12-8-17)15-20(26-27(22,23)24)14-10-16-5-3-2-4-6-16/h2-8,11-12,19-21H,9-10,13-15H2,1H3,(H,22,23,24)