InChI=1S/C21H24O9S/c1-28-16-5-3-4-14(12-16)7-10-18(23)21(30-31(25,26)27)19(24)11-8-15-6-9-17(22)20(13-15)29-2/h3-6,9,12-13,21-22H,7-8,10-11H2,1-2H3,(H,25,26,27)