InChI=1S/C21H26O10S/c1-11-14-7-13(20(29-4)18(10-22)31-32(24,25)26)9-17(28-3)21(14)30-19(11)12-5-6-15(23)16(8-12)27-2/h5-9,11,18-20,22-23H,10H2,1-4H3,(H,24,25,26)