InChI=1S/C21H23NO8/c1-8-9-5-4-6-10(23)14(9)16(26)15-13(8)17(27)18-20(29,19(15)28)11(24)7-12(25)21(18,30)22(2)3/h4-6,8,13,15,17-18,23,27,29-30H,7H2,1-3H3/t8?,13?,15?,17?,18?,20-,21?/m0/s1