InChI=1S/C28H18O12/c1-37-9-3-11-19(13(29)5-9)27(35)39-17-7-15(31)25(33)23(21(11)17)24-22-12-4-10(38-2)6-14(30)20(12)28(36)40-18(22)8-16(32)26(24)34/h3-8,29-34H,1-2H3