InChI=1S/C22H20O14/c23-10-3-1-8(5-11(10)24)6-14(19(29)30)34-13-4-2-9(7-12(13)25)21(33)36-22-17(28)15(26)16(27)18(35-22)20(31)32/h1-7,15-18,22-28H,(H,29,30)(H,31,32)/b14-6-