[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=Branch1][C][=O][C][=Branch1][Branch1][=C][N][Ring1][#Branch1][C][=Branch1][C][=O][N][C@H1][Branch1][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][N][C@H1][C@@H1][N][Branch1][Branch1][C][Ring1][Ring2][=O][C][=Branch2][Ring1][C][=C][Branch1][Branch1][C][S][Ring1][Branch2][C][S][C][=N][N][=N][N][Ring1][Branch1][C][C][=Branch1][C][=O][O-1].[Na+1]"}, {"from": "gpt", "value": "The molecule is the sodium salt form of cefpiramide, a third-generation, semi-synthetic, beta-lactam cephalosporin antibiotic with antibacterial activity. Cefpiramide binds to penicillin-binding proteins (PBPs), transpeptidases that are responsible for crosslinking of peptidoglycan. By preventing crosslinking of peptidoglycan, cell wall integrity is lost and cell wall synthesis is halted."}]