AIDS-144969 AIDS144969 NSC668570 Triethyl 15-(((benzyloxy)carbonyl)amino)-6,12-bis(3-ethoxy-3-oxopropyl)-9-(4-(hydroxy(oxido)amino)benzyl)-5,8,11,14-tetraoxo-4,7,10,13-tetraazaheptadecane-1,3,17-tricarboxylate