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