InChI=1/C22H26N2O4/c1-28-20-13-7-17(8-14-20)22(25)15-21(16-5-3-2-4-6-16)23-18-9-11-19(12-10-18)24(26)27/h7-14,16,21,23H,2-6,15H2,1H3/t21-/m0/s1 543725CA558E69E4