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