InChI=1S/C17H16O10S/c1-25-12-3-2-9(4-13(12)27-28(22,23)24)17(7-18)8-26-14-6-10(19)5-11(20)15(14)16(17)21/h2-6,18-20H,7-8H2,1H3,(H,22,23,24)