AIDS-185298 AIDS185298 Phosphoric acid (2S,3S,5R)-3-azido-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester 2-cyano-ethyl ester 2,2,2-trifluoro-ethyl ester