AIDS-141452 AIDS141452 Enopeptin A NSC657143 N~1~-(1-Benzyl-2-oxo-2-((2,6,9,10-tetramethyl-5,8,11,16,20-pentaoxohexadecahydro-1H,5H,16H-dipyrrolo[2,1-c:2,1-l][1,4,7,10,13]oxatetraazacyclohexadecin-17-yl)amino)ethyl)-N~12~-(2-hydroxy-5-oxo-1-cycl\topenten-1-yl)-2,4,6,8,10-dodecapentaenediamide