InChI=1S/C15H20O9S/c1-21-10-7-13(23-15(17)8-10)14(24-25(18,19)20)6-9-3-4-12(22-2)11(16)5-9/h3-5,10,13-14,16H,6-8H2,1-2H3,(H,18,19,20)