(5S)-5-[(4-Amino-2-oxohydropyrimidinyl)methyl]-2-(2-octadecyloxyethoxy)-1,4,2-dioxaphosphan-2-one 1-O-Octadecylethanediol-cyclic CDV AIDS-104902 AIDS104902 ODE-cCDV Octadecyloxyethyl-cyclic cidofovir