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