Lisinopril Impurity H (Dimer Impurity, Mixture of Diastereomers)

(S)-1-((S)-6-((S)-6-amino-2-(((R)-1-carboxy-3-phenylpropyl)amino)hexanamido)-2-(((S)-1-carboxy-3-phenylpropyl)amino)hexanoyl)pyrrolidine-2-carboxylicacid