2-Oxazolidinone, 3-[3,5-difluoro-4-[1,2,3,6-tetrahydro-1-[hydroxy(methylsulfonyl)acetyl]-4-pyridinyl]phenyl]-5-[(1,2,5-thiadiazol-3-yloxy)methyl]-, (5R)- AIDS-154573 AIDS154573