(R)-N-tert-Butyl-3-[(2s,3S)-3-[(S))-2-(1-naphthoxyacetyl)amino-3,3-dimethylbutanoyl]amino-2-hydroxy-4-phenylbutanoyl]-1,3-thiazolidine-4-carboxamide 1-Noa-tBu-Apns-Pro-NHtBu AIDS-096894 AIDS096894