InChI=1S/C23H45NO5/c1-5-6-7-8-9-10-11-12-13-14-15-16-20(25)19-23(28)29-21(24(2,3)4)17-18-22(26)27/h20-21,25H,5-19H2,1-4H3/t20?,21-/m0/s1