InChI=1S/C38H22O4/c39-35-31-25(21-9-3-1-4-10-21)19-17-23-13-7-15-27(29(23)31)33(37(35)41)34-28-16-8-14-24-18-20-26(22-11-5-2-6-12-22)32(30(24)28)36(40)38(34)42/h1-20,41-42H