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