InChI=1S/C27H28O13/c1-27(2)7-6-10-11(40-27)8-13-16(21(10)38-26-20(31)18(29)19(30)24(39-26)25(32)33)17(28)15-12(34-3)9-14(35-4)22(36-5)23(15)37-13/h6-9,18-20,24,26,29-31H,1-5H3,(H,32,33)