InChI=1S/C19H14O13S/c20-10-6-11(31-16(18(23)24)17(19(25)26)32-33(27,28)29)14(22)15-12(10)13(21)9(7-30-15)8-4-2-1-3-5-8/h1-7,16-17,20,22H,(H,23,24)(H,25,26)(H,27,28,29)