InChI=1S/C16H14O10S/c1-24-16-12(18)11-9(17)6-10(25-15(11)13(19)14(16)20)7-2-4-8(5-3-7)26-27(21,22)23/h2-5,10,18-20H,6H2,1H3,(H,21,22,23)