(R)-N-tert-Butyl-3-[(2s,3S)-3-[(S))-2-(1-naphthoxyacetyl)amino-3-methylbutanoyl]amino-2-hydroxy- 4-phenylbutanoyl]-1,3-thiazolidine-4-carboxamide 1-Noa-Val-Apns-Pro-NHtBu AIDS-096893 AIDS096893 KNI-253