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