1,2-Benzenedicarboxamide

(S)-3-phenyl-1'-(phenylmethyl)[3,4'-bipiperidine]-2,6-dione monohydrochloride

1-[(2R)-2-amino-3-phenylpropanoyl]-N-[(2S)-5-(diaminomethylideneamino)-1-(4-nitroanilino)-1-oxopentan-2-yl]piperidine-2-carboxamide