AIDS-208917 AIDS208917 AZT-P-3TC Phosphoric acid (2R,5S)-5-(4-amino-2-oxo-2H-pyrimidin-1-yl)-1,3-oxathiolan-2-ylmethyl ester (2S,3S,5R)-3-azido-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester