InChI=1S/C21H28N2O11/c1-21(2)5-9(26)13-11(34-21)4-10(12(14(13)23)8(25)3-7(22)6-24)32-20-17(29)15(27)16(28)18(33-20)19(30)31/h4,7,15-18,20,24,27-29H,3,5-6,22-23H2,1-2H3,(H,30,31)