InChI=1S/C15H16O9S/c16-9-1-8(2-10(17)4-9)3-12(24-25(21,22)23)7-13-14(19)5-11(18)6-15(13)20/h1-2,4-6,12,16-20H,3,7H2,(H,21,22,23)