InChI=1S/C15H16O8S/c1-8-4-13(18)15-10(6-12(17)7-14(15)22-8)5-11(16)3-9(2)23-24(19,20)21/h4,6-7,9,17H,3,5H2,1-2H3,(H,19,20,21)