InChI=1S/C26H30O14/c27-10-16-17(29)18(30)21(33)25(39-16)38-15-8-12(7-13(28)9-15)2-1-11-3-5-14(6-4-11)37-26-22(34)19(31)20(32)23(40-26)24(35)36/h1-9,16-23,25-34H,10H2,(H,35,36)/b2-1+