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Hi,</div>
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We'd like to report an issue we are facing with the COD's Optimade API.</div>
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Using a SMILES string to search with COD website interface works fine:</div>
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<a href="https://www.crystallography.net/cod/search.php">https://www.crystallography.net/cod/search.php</a></div>
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SMILES: c1ccccc1</div>
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However, when the same SMILES value is used to query through Optimade API, we get no results back (and no errors either). Here is how we are searching with Optimade:</div>
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<a href="https://www.crystallography.net/cod/optimade/structures?filter=_cod_smiles=%22c1ccccc1%22" id="anchor-56c0a8de-c0f4-b67d-81f9-5eb3ae78ad36">https://www.crystallography.net/cod/optimade/structures?filter=_cod_smiles=%22c1ccccc1%22</a></div>
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Please let me know if you need any further information.</div>
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Kind Regards,</div>
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Mehmet.</div>
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