(3S)-4-({(1S,2S)-2-[(4S,3R,5R)-5-(Aminomethyl)-3,4-dihydroxyoxolan-2-yloxy]-2-[(3S,4R)-5-(2,4-dioxo(1,3-dihydropyrimidinyl))-3,4-dihydroxyoxolan-2-yl]-1-(N-methylcarbamoyl)ethyl}methylamino)-3-hydroxy-2-(methylamino)butanoic acid AIDS-181964 AIDS181964