InChI=1S/C21H24O9S/c1-5-7-11-9-15(23)28-20-16(11)18(24)12-10-14(30-31(25,26)27)21(3,4)29-19(12)17(20)13(22)8-6-2/h6,9,14,24H,2,5,7-8,10H2,1,3-4H3,(H,25,26,27)