InChI=1S/C25H28O11/c1-10(2)21-22(35-21)17-14(27)8-12(9-15(17)28)4-3-11-5-6-16(13(26)7-11)34-25-20(31)18(29)19(30)23(36-25)24(32)33/h3-10,18-23,25-31H,1-2H3,(H,32,33)/b4-3+