InChI=1S/C21H28N2O9/c24-14-3-1-2-12-9-4-10(8-22(12)14)13-5-11(6-15(25)23(13)7-9)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h1-3,9-11,13,15-19,21,25-28H,4-8H2,(H,29,30)