(2S,3R,4R,5S)-N,N'-Bis([2-pyridylacetyl]-L-isoleucinyl)-2,5-diamino-1,6-diphenylhexane-3,4-diol 140196-60-7 AIDS-051253 AIDS051253 Bis(2-PyAc-Ile-Phe-.psi.-[CHOH]) P9941