InChI=1/C26H28O15/c27-12-5-3-10(4-6-12)1-2-11-7-13(38-25-19(32)15(28)17(30)21(40-25)23(34)35)9-14(8-11)39-26-20(33)16(29)18(31)22(41-26)24(36)37/h1-9,15-22,25-33H,(H,34,35)(H,36,37)/b2-1+