InChI=1S/C19H16O10/c20-9-3-1-2-8(4-9)11-7-28-13-6-10(5-12(21)14(13)15(11)22)29-17(19(26)27)16(23)18(24)25/h1-6,11,16-17,20-21,23H,7H2,(H,24,25)(H,26,27)