InChI=1S/C14H16O9S/c1-14(7-22-24(19,20)21)6-11(16)9-4-8(2-3-13(17)18)10(15)5-12(9)23-14/h4-5,15H,2-3,6-7H2,1H3,(H,17,18)(H,19,20,21)