Synonyms: P9941;(2S,3R,4R,5S)-N,N'-Bis((2-pyridylacetyl)-L-isoleucinyl)-2,5-diamino-1,6-diphenylhexane-3,4-diol;(2S,3R,4R,5S)-N,N'-Bis([2-pyridylacetyl]-L-isoleucinyl)-2,5-diamino-1,6-diphenylhexane-3,4-diol;AC1LAENL;P 9941;Bis(2-PyAc-Ile-Phe-psi-(CHOH));Bis(2-PyAc-Ile-Phe-.psi.-[CHOH]);(2S,3S)-N-[(2S,3R,4R,5S)-3,4-dihydroxy-5-[[(2S,3S)-3-methyl-2-[(2-pyridin-2-ylacetyl)amino]pentanoyl]amino]-1,6-diphenylhexan-2-yl]-3-methyl-2-[(2-pyridin-2-ylacetyl)amino]pentanamide