InChI=1S/C21H20O10/c22-11-8-13(24)15(12(23)7-6-10-4-2-1-3-5-10)14(9-11)30-21-18(27)16(25)17(26)19(31-21)20(28)29/h1-9,16-19,21-22,24-27H,(H,28,29)