InChI=1S/C20H24O9S/c1-12(2)20(29-30(23,24)25)16(21)9-13(3)7-8-27-17-10-14(26-4)11-18-15(17)5-6-19(22)28-18/h5-7,10-11,16,20-21H,1,8-9H2,2-4H3,(H,23,24,25)