InChI=1S/C28H24O12/c1-34-18-10-15(11-19(35-2)23(18)32)24-21(12-37-28(33)14-4-6-16(29)17(30)8-14)38-27-25-13(5-7-22(31)39-25)9-20(36-3)26(27)40-24/h4-11,21,24,29-30,32H,12H2,1-3H3