<|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. all relevant data are within the paper and its supporting information files, except for xray structural data deposited in the csd. ccdc nos. 1010556 and 1010557 contain the supplementary crystallographic data for 1, and 3, respectively. these data can be obtained free of charge via http://www.ccdc.cam.ac.uk/conts/retrieving.html, or from the cambridge crystallographic data centre, 12 union road, cambridge cb2 1ez, uk; fax: (44) 1223-336-033; or email: deposit@ccdc.cam.ac.uk.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>