InChI=1S/C25H18O13/c1-6-3-7-4-8-15(27)23(33)25(37-20(8)18(30)11(7)24(34)36-6)22(32)14-17(29)12-9(26)5-10(35-2)16(28)13(12)19(31)21(14)38-25/h3-5,15,22-23,26-28,30,32-33H,1-2H3