InChI=1S/C21H25NO8/c1-8-9-5-4-6-10(23)14(9)16(26)15-13(8)18(27)21(30)17(22(2)3)11(24)7-12(25)20(21,29)19(15)28/h4-6,8,11,13,15,17-18,23-24,27,29-30H,7H2,1-3H3/t8?,11?,13?,15?,17?,18?,20-,21?/m1/s1