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