[{"from": "human", "value": "Please give me some details about this molecule. [C][N][Branch1][C][C][C][C][N][C][=Branch1][=Branch1][=N][N][=N][Ring1][Branch1][S][C][C][=C][Branch2][Ring2][C][N][C@@H1][Branch2][Ring1][Branch2][C@@H1][Branch1][Branch1][C][Ring1][Ring2][=O][N][C][=Branch1][C][=O][C][C][=C][S][C][=Branch1][Ring2][=N][Ring1][Branch1][N][S][C][Ring2][Ring1][Ring1][C][=Branch1][C][=O][O].[Cl].[Cl]"}, {"from": "gpt", "value": "The molecule is the hydrochloride salt form of cefotiam, a third-generation, semi-synthetic, beta-lactam cephalosporin antibiotic with antibacterial activity. Cefotiam 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."}]