InChI=1S/C21H26O10S/c1-5-6-13(22)17-19-12(9-14(23)21(3,4)30-19)18(25)16-11(8-15(24)29-20(16)17)7-10(2)31-32(26,27)28/h8,10,14,23,25H,5-7,9H2,1-4H3,(H,26,27,28)