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