InChI=1S/C27H30O12/c1-26(2)17(39-26)9-13-15(34-3)7-6-14-21(13)37-23-12-5-4-11(8-16(12)35-10-27(14,23)33)36-25-20(30)18(28)19(29)22(38-25)24(31)32/h4-8,17-20,22-23,25,28-30,33H,9-10H2,1-3H3,(H,31,32)