InChI=1S/C21H27N2O9/c1-9(25)23(2)6-5-12-11-4-3-10(7-13(11)22-15(12)14(23)8-24)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h3-4,7,14,16-19,21-22,24,26-28H,5-6,8H2,1-2H3,(H,29,30)