InChI=1S/C19H14O14S/c20-10-5-11(32-17(19(26)27)15(23)18(24)25)14(22)16-12(10)13(21)9(6-31-16)7-1-3-8(4-2-7)33-34(28,29)30/h1-6,15,17,20,22-23H,(H,24,25)(H,26,27)(H,28,29,30)