InChI=1S/C16H14O11S2/c1-8-2-3-9(4-11(8)17)13-7-12(18)16-14(25-13)5-10(26-28(19,20)21)6-15(16)27-29(22,23)24/h2-6,13,17H,7H2,1H3,(H,19,20,21)(H,22,23,24)