InChI=1S/C20H20O9S2/c21-14(10-28-20-17(24)15(22)16(23)18(29-20)19(25)26)27-8-2-1-4-11-6-7-13(31-11)12-5-3-9-30-12/h3,5-7,9,15-18,20,22-24H,2,8,10H2,(H,25,26)