6-[(3,5-Dimethylphenyl)thio]-5-ethyl-1-[4-(methoxy-carbonyl)butyl]uracil AIDS-085092 AIDS085092 Methyl 5-[6-(3,5-dimethylphenylthio)-5-ethyl-2,4-dioxo-1,3-dihydropyrimidinyl]pentanoate