[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][O][C][C][=C][Branch2][Ring1][P][N][C@@H1][Branch2][Ring1][#Branch1][C@@H1][Branch1][Branch1][C][Ring1][Ring2][=O][N][C][=Branch1][C][=O][C][S][C][=C][C][=N][C][=C][Ring1][=Branch1][S][C][Ring2][Ring1][Ring2][C][=Branch1][C][=O][O-1].[Na+1]"}, {"from": "gpt", "value": "The molecule is the sodium salt form of cephapirin, a semi-synthetic, broad-spectrum, beta-lactam, first-generation cephalosporin antibiotic with bactericidal activity. Cephapirin sodium inhibits bacterial cell wall synthesis by inhibiting the final transpeptidation step of peptidoglycan synthesis and subsequent cross-linking of peptidoglycan units. This results in a reduction of cell wall stability and leads to cell lysis."}]