InChI=1S/C15H16O9S/c1-8(24-25(20,21)22)2-10(17)3-9-4-11(18)5-14-15(9)13(19)6-12(7-16)23-14/h4-6,8,16,18H,2-3,7H2,1H3,(H,20,21,22)