1-[4-(2-Methyl-2H-tetrazol-5-yl)-phenyl]-4(S)-hydroxy-5(S)-2,5-bis[N-(N-methoxycarbonyl-(L)-tert-leucyl)amino]-6-phenyl-2-azahexane 198904-13-1 2,5,6,10,13-Pentaazatetradecanedioic acid, 3,12-bis(1,1-dimethylethyl)-8-hydroxy-6-[[4-(2-methyl-2H-tetrazol-5-yl)phenyl]methyl]-4,11-dioxo-9-(phenylmethyl)-, dimethyl ester, (3S,8S,9S,12S)- AIDS-057739 AIDS057739 CGP 75176 Heterocyclic Azahexane deriv.