InChI=1S/C15H12O11S/c16-6-3-10(25-11-4-7(17)13(20)14(21)12(6)11)5-1-8(18)15(9(19)2-5)26-27(22,23)24/h1-2,4,10,17-21H,3H2,(H,22,23,24)