InChI=1S/C22H18O12/c23-15-9(21(29)34-22-18(26)16(24)17(25)19(33-22)20(27)28)2-4-11-10(15)6-13(32-11)8-1-3-12-14(5-8)31-7-30-12/h1-6,16-19,22-26H,7H2,(H,27,28)