http://qiserver.ugr.es/cod/1001664.cif
http://qiserver.ugr.es/cod/1525207.cif
http://qiserver.ugr.es/cod/2020192.cif
http://qiserver.ugr.es/cod/4001116.cif
http://qiserver.ugr.es/cod/4124542.cif
http://qiserver.ugr.es/cod/7227893.cif