InChI=1S/C22H20O12/c23-10-1-7(32-22-18(26)16(24)17(25)20(34-22)21(27)28)2-14-15(10)19-9(5-29-14)8-3-12-13(31-6-30-12)4-11(8)33-19/h1-4,9,16-20,22-26H,5-6H2,(H,27,28)