[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch2][Ring2][=Branch2][=C][Branch2][Ring1][S][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@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C][=Branch1][C][=O][O-1][C][O]"}, {"from": "gpt", "value": "The molecule is a cephalosporin carboxylic acid anion that is the conjugate base of deacetylcephalosporin C, arising from deprotonation of both carboxy groups and protonation of the amino group; major species at pH 7.3. It is a conjugate base of a deacetylcephalosporin C."}]