InChI=1S/C21H25NO8/c1-22(2)17-11(25)6-12(26)21(30)16(17)19(28)14-9(7-23)8-4-3-5-10(24)13(8)18(27)15(14)20(21)29/h3-5,9,11,14-17,19,23-25,28,30H,6-7H2,1-2H3/t9?,11?,14?,15?,16?,17?,19?,21-/m0/s1