InChI=1S/C17H14O10S/c1-25-12-4-8-9(5-10(12)19)17(16(8)27-28(22,23)24)6-26-13-3-7(18)2-11(20)14(13)15(17)21/h2-5,16,18-20H,6H2,1H3,(H,22,23,24)