[(S)-3-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-2-oxo-pentyl]-phosphonic acid dimethyl ester

{(E)-(S)-1-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-2-hydroxy-heptadec-3-enyl}-carbamic acid tert-butyl ester