9-((5-Aminopentanoyl)amino)-18,27,36,45,54,63-hexakis(4-(((benzyloxy)carbonyl)amino)butyl)-3,10,16,19,25,28,34,37,43,46,52,55,61-tridecaoxo-1-phenyl-2-oxa-4,11,17,20,26,29,35,38,44,47,53,56,62-trideca\tazatetrahexacontan-64-oic acid AIDS-126498 AIDS126498 NSC112954