Chemical Name:(2S,4S)-1-[[(R)-[(1S)-2-methyl-1-(propanoyloxy)propoxy](4-phenylbutyl)phosphoryl]acetyl]-4-phenylpyrrolidine-2-carboxylic acid (as per EP) ; (4S)-4-phenyl-1-[(R)-[(S)-1-hydroxy-2-methyl-propoxy](4-phenylbutyl)phospinyl]acetyl-L-proline propionate (ester) (as per USP)
