(2S,11'S,8'S)-2-(tert-Butoxycarbonylamino)-3-phenyl-1-[[7',10'-dioxo-8'-(1-methylpropyl)-2'-oxa-6',9'-diazabicyclo[11.2.2]heptadeca-13',15',16'-trien-11-yl]amino]propane AIDS-030802 AIDS030802 Phe-Ile-Val Macrocyclic mimetic