InChI=1S/C22H20O11/c1-28-19-14(11-6-9-4-2-3-5-10(9)31-11)12(7-13-18(19)30-8-29-13)32-22-17(25)15(23)16(24)20(33-22)21(26)27/h2-7,15-17,20,22-25H,8H2,1H3,(H,26,27)