12-Oxa-2,6,10-triazatetradecanoic acid, 4,8-dihydroxy-13,13-dimethyl-11-oxo-3-[[4-(phenylmethoxy)phenyl]methyl]-9-(phenylmethyl)-, 1,1-dimethylethyl ester, [3S-(3R*,4S*,8S*,9R*)]- 162539-58-4 AIDS-033308 AIDS033308 Phe Aminodiol isostere