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