CC1([C@@H](N[C@H](S1)[C@@H](C(=O)NCc2ccccc2)NC(=O)Cc3ccccc3)C(=O)O)C G23_200_1HTE (2R,4S)-2-[(1R)-2-(benzylamino)-2-oxo-1-[(2-phenylacetyl)amino]ethyl]-5,5-dimethyl-thiazolidine-4-carboxylic acid