InChI=1S/C62H48O15/c63-38-22-36(23-39(64)26-38)50-49-35(21-41(66)29-47(49)75-57(50)32-10-4-1-5-11-32)18-16-31-17-19-46-44(20-31)52(59(74-46)34-14-8-3-9-15-34)45-28-42(67)30-48-53(45)51(58(76-48)33-12-6-2-7-13-33)37-24-40(65)27-43(25-37)73-62-56(70)54(68)55(69)60(77-62)61(71)72/h1-30,50-51,54-58,60,62-70H,(H,71,72)/b18-16+