InChI=1S/C21H21NO8/c1-8-9-5-4-6-10(23)13(9)18(27)21(30)14(8)17(26)15-16(22(2)3)11(24)7-12(25)20(15,29)19(21)28/h4-6,14-17,23,26,29-30H,1,7H2,2-3H3/t14?,15?,16?,17?,20-,21?/m0/s1