<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: the authors confirm that all data underlying the findings are fully available without restriction. crystallographic data (excluding structure factors) for the structures reported in this paper have been deposited with the cambridge crystallographic data centre as supplementary publication nos. ccdc 989107989110. copies of the data can be obtained free of charge on application to ccdc, 12 union road, cambridge cb2<u+2009>1ez, uk (fax: (+44)<u+2009>1223-336-033; e-mail: deposit@ccdc.cam.ac.uk).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>