InChI=1S/C19H16O14S/c20-10-2-1-7(3-12(10)33-34(28,29)30)9-6-31-13-5-8(4-11(21)14(13)15(9)22)32-17(19(26)27)16(23)18(24)25/h1-5,9,16-17,20-21,23H,6H2,(H,24,25)(H,26,27)(H,28,29,30)