[{"from": "human", "value": "What can you tell me about this molecule? [C][C][Branch2][Ring2][O][C@@H1][Branch2][Ring2][C][N][C@H1][Branch1][Ring2][S][Ring1][Branch1][C@@H1][Branch1][Branch1][C][Ring1][Branch1][=O][N][C][=Branch1][C][=O][C][=C][Branch1][=Branch2][C][=C][C][=C][Ring1][=Branch1][O][C][O][C][C][=Branch1][C][=O][O-1][C]"}, {"from": "gpt", "value": "The molecule is the sodium salt form of methicillin, a semisynthetic beta-lactam penicillin antibiotic with beta-lactamase resistant activity. Methicillin sodium is bactericidal and binds to specific penicillin-binding proteins on the bacterium and inhibits the transpeptidation enzyme, thereby preventing the cross-linking of peptidoglycans. This leads to an interruption of the bacterial cell wall and causes bacterial lysis. Methicillin sodium is active against beta-lactamase producing staphylococci."}]