InChI=1S/C21H26O10S/c1-4-6-13(22)17-19-12(10-14(23)21(2,3)31-19)18(25)16-11(9-15(24)30-20(16)17)7-5-8-29-32(26,27)28/h9,14,23,25H,4-8,10H2,1-3H3,(H,26,27,28)