InChI=1S/C23H20O12/c1-30-9-6-12(31-2)14-13(7-9)33-19-10-4-3-8(5-11(10)34-22(29)15(14)19)32-23-18(26)16(24)17(25)20(35-23)21(27)28/h3-7,16-18,20,23-26H,1-2H3,(H,27,28)