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