InChI=1S/C21H28O10/c1-5-9-6-12(21(3,4)28)29-17-10(9)7-11(22)8(2)16(17)30-20-15(25)13(23)14(24)18(31-20)19(26)27/h5,7,9,12-15,18,20,22-25,28H,1,6H2,2-4H3,(H,26,27)