2-[(2,4-Dioxo-1,3-dihydropyrimidinyl)methoxy]ethyl ({(4S,5S,2R,3R,6R)-6-[(phenylmethoxy)methyl]-3,4,5-tris(phenylmethoxy)-2H-3,4,5,6-tetrahydropyran-2-yloxy}carbonylamino)sulfonate AIDS-165728 AIDS165728