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