[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@][Branch2][Branch1][N][C@H1][C][C@H1][C@@H1][Branch2][Ring2][S][C][=Branch1][C][=O][C][=Branch2][Ring2][Ring1][=C][Branch2][Ring1][=C][C@][Ring1][#Branch1][Branch2][Ring1][#Branch1][C][=Branch1][C][=O][C][Ring1][N][=C][Branch1][N][C][=C][Ring1][S][C][=C][C][=C][Ring1][=Branch1][O][O][O][O][C][=Branch1][C][=O][N][N][Branch1][C][C][C][O].[Cl]"}, {"from": "gpt", "value": "The molecule is the hydrochloride salt of tetracycline, a broad-spectrum naphthacene antibiotic produced semisynthetically from chlortetracycline, an antibiotic isolated from the bacterium Streptomyces aureofaciens. In bacteria, tetracycline blocks binding of aminoacyl-tRNA to the mRNA-ribosome complex, thereby inhibiting protein synthesis and bacterial cell growth. Because naturally fluorescing tetracycline binds to newly formed bone at the bone/osteoid interface, tetracycline-labeling of bone and fluorescence microscopy may be used to perform bone histomorphometry."}]