1-O-Octadecyl-2-O-benzyl-sn-glycero-3-cidofovir AIDS-155331 AIDS155331 ODGB-CDV Phosphonic acid, [[[(1S)-2-(4-amino-2-oxo-1(2H)-pyrimidinyl)-1-(hydroxymethyl)ethyl]oxy]methyl]-, (2R)-3-(octadecyloxy)-2-(phenylmethoxy)propyl ester