InChI=1S/C25H28O11/c1-10(2)21-22(35-21)17-15(28)8-12(4-3-11-5-6-13(26)14(27)7-11)9-16(17)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+