InChI=1S/C21H20O11/c22-10-5-6-11(23)18-14(10)12(24)7-13(31-18)8-1-3-9(4-2-8)30-21-17(27)15(25)16(26)19(32-21)20(28)29/h1-6,13,15-17,19,21-23,25-27H,7H2,(H,28,29)