InChI=1S/C16H16O9S/c1-16(2,18)11(25-26(19,20)21)8-23-15-13-10(5-6-22-13)7-9-3-4-12(17)24-14(9)15/h3-7,11,18H,8H2,1-2H3,(H,19,20,21)