InChI=1S/C21H20O10/c22-12-7-6-10-13(23)11(9-4-2-1-3-5-9)8-29-17(10)18(12)30-21-16(26)14(24)15(25)19(31-21)20(27)28/h1-7,11,14-16,19,21-22,24-26H,8H2,(H,27,28)