InChI=1S/C21H20O11/c22-3-5-29-14-2-1-11(7-15(14)30-6-4-23)21-20(28)19(27)18-13(24)8-12(9-16(18)32-21)31-10-17(25)26/h1-2,7-9,22-24,28H,3-6,10H2,(H,25,26)