InChI=1S/C20H28N2O4/c1-4-20(2,3)17(23)18(24)22-12-6-10-16(22)19(25)26-13-7-9-15-8-5-11-21-14-15/h5,8,11,14,16H,4,6-7,9-10,12-13H2,1-3H3/t16-/m0/s1