[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=Branch2][Ring1][Ring1][=C][Branch1][#C][C][=C][Ring1][=Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][Cl][O]"}, {"from": "gpt", "value": "The molecule is a specific biomarker of hypochlorous acid (HClO), the oxidation product of myeloperoxidase (MPO). Under oxidative stress, 3-chlorotyrosine is produced in proteins with tyrosine residues by the strong oxidant HClO. HClO which is formed at sites of inflammation is also the anti-bacterial molecule produced by neutrophils through MPO-catalyzed oxidation. MPO is a heme-containing enzyme secreted by activated neutrophils and monocytes; it is the only enzyme that produces HClO. Therefore, 3-chlorotyrosine can potentially be used to help determine the extent of neutrophilic inflammation."}]