2',3'-dideoxy-4-N-(N-13-(6-(3,5-dimethylphenylthio)-5-ethyl-1-(5-oxopentyl)uracil)-13-azadodecyl)cytidine
2',3'-dideoxy-4-n-(n-13-(6-(3,5-dimethylphenylthio)-5-ethyl-1-(5-oxopentyl)uracil)-13-azadodecyl)cytidine