InChI=1S/C17H14O10S/c1-24-9-5-11(18)15-13(6-9)26-7-10(16(15)20)8-3-12(19)17(14(4-8)25-2)27-28(21,22)23/h3-7,18-19H,1-2H3,(H,21,22,23)