InChI=1S/C16H12O10S/c17-9-3-1-7(2-4-9)16-14(21)13(20)11-12(19)10(18)5-8(15(11)26-16)6-25-27(22,23)24/h1-5,17-19,21H,6H2,(H,22,23,24)