InChI=1S/C35H28O14/c36-18-7-2-15(3-8-18)1-4-17-11-20(38)12-22-25(17)35(34(45)48-22)26-23(46-31(35)16-5-9-19(37)10-6-16)13-21(39)14-24(26)47-33-29(42)27(40)28(41)30(49-33)32(43)44/h1-14,27-31,33,36-42H,(H,43,44)/b4-1+