AG1132 analog AIDS-028321 AIDS028321 N-(1-Ethylcyclopentyl)-N-(2-hydroxyethyl)-2-[3-hydroxy-4-[2-[[3-hydroxy-2-(hydroxymethyl)propyl])(1-methyl-1-phenylethyl)carbamoyl]-4-methylphenyl]butyl]benzamide cPen-Butamide, 2OHBu deriv.