InChI=1S/C21H24O11/c1-21(2,13-7-29-13)9-4-8-5-11(28-3)12(6-10(8)30-19(9)27)31-20-16(24)14(22)15(23)17(32-20)18(25)26/h4-6,13-17,20,22-24H,7H2,1-3H3,(H,25,26)