InChI=1S/C35H28O15/c36-17-6-3-14(21(39)10-17)1-2-16-9-18(37)12-23-25(16)35(34(46)49-23)26-22(40)11-19(38)13-24(26)48-31(35)15-4-7-20(8-5-15)47-33-29(43)27(41)28(42)30(50-33)32(44)45/h1-13,27-31,33,36-43H,(H,44,45)/b2-1+