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