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