1-[4-(Thiazol-2-yl)-phenyl]-4(S)-hydroxy-2-N-(N-ethoxycarbonyl-(L)-valyl)amino]-5(S)-N-(N-methoxycarbonyl-(L)-valyl)amino-6-phenyl-2-azahexane 198904-04-0 2,5,6,10,13-Pentaazatetradecanedioic acid, 8-hydroxy-3,12-bis(1-methylethyl)-4,11-dioxo-9-(phenylmethyl)-6-[[4-(2-thiazolyl)phenyl]methyl]-, 1-ethyl 14-methyl ester, [3S-(3R*,8R*,9R*,12R*)]- AIDS-057731 AIDS057731 Heterocyclic Azahexane deriv.