InChI=1S/C16H12O10S/c1-24-16-10(19)6-13-14(15(16)20)9(18)5-11(25-13)7-2-3-8(17)12(4-7)26-27(21,22)23/h2-6,17,19-20H,1H3,(H,21,22,23)