InChI=1S/C21H24O10/c1-29-12-8-11(7-6-10-4-2-3-5-13(10)22)18(14(23)9-12)30-21-17(26)15(24)16(25)19(31-21)20(27)28/h2-5,8-9,15-17,19,21-26H,6-7H2,1H3,(H,27,28)