InChI=1S/C21H24N2O11/c24-12(25)6-11(33-21-17(28)15(26)16(27)18(34-21)20(31)32)14-13-8(5-10(23-14)19(29)30)7-3-1-2-4-9(7)22-13/h1-4,10-11,14-18,21-23,26-28H,5-6H2,(H,24,25)(H,29,30)(H,31,32)