InChI=1S/C35H28O14/c36-18-12-17(7-6-15-4-2-1-3-5-15)23-21(13-18)48-34(45)35(23)24-22(14-20(37)25(38)26(24)39)47-31(35)16-8-10-19(11-9-16)46-33-29(42)27(40)28(41)30(49-33)32(43)44/h1-14,27-31,33,36-42H,(H,43,44)/b7-6+