InChI=1S/C21H24O10/c1-29-13-7-11(6-12(22)9-13)3-2-10-4-5-15(14(23)8-10)30-21-18(26)16(24)17(25)19(31-21)20(27)28/h4-9,16-19,21-26H,2-3H2,1H3,(H,27,28)