[{"from": "human", "value": "Provide a description of this molecule. [C][C][O][C][=C][Branch1][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][Ring1][#Branch2][C][=Branch1][C][=O][N][C@H1][C@@H1][N][Branch1][Branch1][C][Ring1][Ring2][=O][C@H1][Branch1][O][C][Branch1][Ring2][S][Ring1][#Branch1][Branch1][C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a parenteral, second generation penicillinase-resistant penicillin antibiotic used largely to treat moderate to severe staphylococcal infections. Nafcillin has been linked to rare occurrences of clinically apparent, idiosyncratic liver injury."}]