InChI=1S/C37H28O12/c38-20-7-1-17(2-8-20)33-27(44)15-24-25(42)16-29-31(34(24)46-33)32-30-26(43)13-23(41)14-28(30)48-37(49-29,19-5-11-22(40)12-6-19)35(32)47-36(45)18-3-9-21(39)10-4-18/h1-14,16,27,32-33,35,38-44H,15H2