InChI=1S/C21H24O10/c1-29-12-6-11(3-2-10-4-5-14(22)15(23)8-10)7-13(9-12)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)