(+)-1-[(1S,4R)-2,3-dideoxy-2,3-didehydro-2-fluoro-4-thio-beta-L-ribofuranosyl]thymine 2,4(1H,3H)-Pyrimidinedione, 1-[(2S,5R)-3-fluoro-2,5-dihydro-5-(hydroxymethyl)-2-thienyl]-5-methyl- AIDS-163229 AIDS163229