InChI=1S/C28H26O12/c1-39-20-8-12(2-5-17(20)31)9-21(26(34)35)40-28(38)25-23(14-4-7-16(30)19(33)11-14)22(24(25)27(36)37)13-3-6-15(29)18(32)10-13/h2-8,10-11,21-25,29-33H,9H2,1H3,(H,34,35)(H,36,37)