InChI=1S/C21H24O8S/c1-27-17-7-3-5-15(13-17)9-11-19(22)21(29-30(24,25)26)20(23)12-10-16-6-4-8-18(14-16)28-2/h3-8,13-14,21H,9-12H2,1-2H3,(H,24,25,26)