InChI=1S/C22H18O12/c1-30-11-5-8(31-22-17(26)15(24)16(25)19(34-22)20(27)28)6-12-14(11)18-13(21(29)33-12)9-3-2-7(23)4-10(9)32-18/h2-6,15-17,19,22-26H,1H3,(H,27,28)