InChI=1S/C27H30O14/c28-8-17-20(31)22(33)24(35)26(40-17)38-12-3-1-11(2-4-12)15-10-37-16-7-13(5-6-14(16)19(15)30)39-27-25(36)23(34)21(32)18(9-29)41-27/h1-7,10,17-18,20-29,31-36H,8-9H2