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