InChI=1S/C35H28O15/c36-17-9-15(4-1-14-2-6-19(7-3-14)47-33-29(43)27(41)28(42)30(50-33)32(44)45)25-23(12-17)49-34(46)35(25)26-22(40)11-18(37)13-24(26)48-31(35)16-5-8-20(38)21(39)10-16/h1-13,27-31,33,36-43H,(H,44,45)/b4-1+