InChI=1S/C21H24O9S/c1-5-6-12-9-14(22)29-19-13-7-8-21(3,4)30-20(13)16(18(24)15(12)19)17(23)11(2)10-28-31(25,26)27/h7-9,11,24H,5-6,10H2,1-4H3,(H,25,26,27)