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