InChI=1S/C19H16O11/c20-8-3-1-7(2-4-8)9-6-29-16-12(13(9)22)10(21)5-11(14(16)23)30-17(19(27)28)15(24)18(25)26/h1-5,9,15,17,20-21,23-24H,6H2,(H,25,26)(H,27,28)