1-[4-(2-tert-Butyl-2H-tetrazol-5-yl)-phenyl]-4(S)-hydroxy-2-N-(N-methoxycarbonyl-(L)-tert-leucyl)amino]-5(S)-N-(N-methoxycarbonyl-(L)-valyl)amino-6-phenyl-2-azahexane 198904-21-1 2,5,6,10,13-Pentaazatetradecanedioic acid, 3-(1,1-dimethylethyl)-6-[[4-[2-(1,1-dimethylethyl)-2H-tetrazol-5-yl]phenyl]methyl]-8-hydroxy-12-(1-methylethyl)-4,11-dioxo-9-(phenylmethyl)-, dimethyl ester, [3S-(3R*,8R*,9R*,12R*)]- AIDS-057745 AIDS057745 Heterocyclic Azahexane deriv.