Lisinopril Imp. G (EP):(2S)-1-[(2S)-6-amino-2-[[(2S)-1-[[[(5S)-5-[[(1S)-1-carboxy-3-phenylpropyl]amino]-6-[(2S)-2-carboxypyrrolidin-1-yl]-6-oxohexyl]amino]carbonyl]-3-phenylpropyl]amino]hexanoyl]pyrrolidine-2-carboxylic acid (lisinopril dimer).