InChI=1S/C21H25NO8/c1-20(29)8-5-4-6-9(23)12(8)17(26)13-14(20)18(27)15-16(22(2)3)10(24)7-11(25)21(15,30)19(13)28/h4-6,10,14-16,18,23-24,26-27,29-30H,7H2,1-3H3/t10?,14?,15?,16?,18?,20-,21+/m1/s1