http://qiserver.ugr.es/cod/1527603.cif
http://qiserver.ugr.es/cod/1528209.cif
http://qiserver.ugr.es/cod/1528354.cif
http://qiserver.ugr.es/cod/1528861.cif
http://qiserver.ugr.es/cod/5000222.cif
http://qiserver.ugr.es/cod/9012465.cif
http://qiserver.ugr.es/cod/9017496.cif