InChI=1S/C35H28O12/c36-20-13-19(12-11-17-7-3-1-4-8-17)25-22(14-20)46-34(43)35(25)26-23(44-31(35)18-9-5-2-6-10-18)15-21(37)16-24(26)45-33-29(40)27(38)28(39)30(47-33)32(41)42/h1-16,27-31,33,36-40H,(H,41,42)/b12-11+