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