InChI=1S/C15H16O9S/c1-8-2-13(19)15-9(4-11(17)6-14(15)24-8)3-10(16)5-12(18)7-23-25(20,21)22/h2,4,6,12,17-18H,3,5,7H2,1H3,(H,20,21,22)