InChI=1/C22H26N2O7/c1-22(2,3)23-21(29)20(19-14(26)9-13(25)10-15(19)27)24(4)18(28)8-12-5-6-16-17(7-12)31-11-30-16/h5-7,9-10,20,25-27H,8,11H2,1-4H3,(H,23,29)/t20-/m0/s1/f/h23H 51679B92570F0412