InChI=1S/C19H14O10/c20-13-9(8-4-2-1-3-5-8)7-28-10-6-11(14(21)15(22)12(10)13)29-17(19(26)27)16(23)18(24)25/h1-7,16-17,21-23H,(H,24,25)(H,26,27)