InChI=1S/C28H24O12/c1-38-23-12-17(3-7-19(23)30)14-25(28(36)37)40-26(33)9-5-15-4-8-22(21(32)10-15)39-24(27(34)35)13-16-2-6-18(29)20(31)11-16/h2-13,25,29-32H,14H2,1H3,(H,34,35)(H,36,37)/b9-5+,24-13-