InChI=1S/C27H30O14/c1-5-11(2)25(35)39-21-16-14(8-6-13-7-9-15(29)38-20(13)16)37-23(21)27(4,41-12(3)28)10-36-26-19(32)17(30)18(31)22(40-26)24(33)34/h5-9,17-19,21-23,26,30-32H,10H2,1-4H3,(H,33,34)/b11-5+