InChI=1S/C15H12O10S/c16-7-2-1-6(3-9(7)25-26(21,22)23)4-11-14(19)12-10(24-11)5-8(17)13(18)15(12)20/h1-3,5,11,16-18,20H,4H2,(H,21,22,23)