InChI=1S/C22H20O11/c23-6-14-17(25)19(27)20(28)22(33-14)32-10-3-1-9(2-4-10)11-7-29-12-5-13-21(31-8-30-13)18(26)15(12)16(11)24/h1-5,7,14,17,19-20,22-23,25-28H,6,8H2