(6S)-2-{(1S)[(4S,3R,5R)-5-(Aminomethyl)-3,4-dihydroxyoxolan-2-yloxy][(3S,4R)-5-(2,4-dioxo(1,3-dihydropyrimidinyl))-3,4-dihydroxyoxolan-2-yl]methyl}-6-dodecanoyloxy-1,4-dimethyl-3-oxo-1,4-diazaperhydroepine-5-carboxylic acid AIDS-181971 AIDS181971