InChI=1S/C21H25NO8/c1-22(2)17-11-6-10-16(19(28)21(11,30)14(26)7-13(17)25)18(27)15-9(20(10,29)8-23)4-3-5-12(15)24/h3-5,10-11,13,16-17,23-25,29-30H,6-8H2,1-2H3/t10?,11?,13?,16?,17?,20-,21-/m1/s1