InChI=1S/C16H16O9S/c1-23-12-6-10-13(17)11(7-24-16(10)15(19)14(12)18)8-2-4-9(5-3-8)25-26(20,21)22/h2-6,11,13,17-19H,7H2,1H3,(H,20,21,22)