[{"from": "human", "value": "Describe this molecule. [C][C][=Branch2][Ring2][Branch1][=C][Branch2][Ring1][N][N][C@H1][Branch1][Ring2][S][Ring1][=Branch1][C@@H1][Branch1][Branch1][C][Ring1][Branch1][=O][N][C][=Branch1][C][=O][C][C][=C][C][=C][S][Ring1][Branch1][C][=Branch1][C][=O][O][/C][=C][/C][=C][Branch1][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a beta-lactam antibiotic, with diagnostic properties. Nitrocefin is sensitive to hydrolysis by all lactamases produced by gram-positive and gram-negative bacteria. This agent undergoes a color change as its amide bond is hydrolyzed by beta-lactamase, making it useful as a reagent in beta-lactamase activity studies."}]