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