InChI=1S/C20H25N3O9/c1-3-23(4-2)18(28)10(8-21)5-9-6-11(22)16(12(24)7-9)31-20-15(27)13(25)14(26)17(32-20)19(29)30/h5-7,13-15,17,20,24-27H,3-4,22H2,1-2H3,(H,29,30)