InChI=1S/C21H26O8S/c1-27-20-17-12-14(19(23)21(20)28-2)5-3-4-6-15(29-30(24,25)26)9-7-13-8-10-18(22)16(17)11-13/h8,10-12,15,22-23H,3-7,9H2,1-2H3,(H,24,25,26)