InChI=1S/C21H20O11/c22-7-13-15(25)17(27)19(29)21(32-13)30-10-5-11(24)14-12(6-10)31-20(18(28)16(14)26)8-1-3-9(23)4-2-8/h1-6,13,15,17,19,21-25,27-29H,7H2/t13-,15-,17+,19-,21-/m1/s1