InChI=1S/C21H24O9S/c1-4-6-12-10-15(23)29-19-13-8-9-21(3,11-28-31(25,26)27)30-20(13)17(14(22)7-5-2)18(24)16(12)19/h8-10,24H,4-7,11H2,1-3H3,(H,25,26,27)