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