http://qiserver.ugr.es/cod/1523062.cif
http://qiserver.ugr.es/cod/1525020.cif
http://qiserver.ugr.es/cod/1525439.cif
http://qiserver.ugr.es/cod/1525440.cif
http://qiserver.ugr.es/cod/1532868.cif
http://qiserver.ugr.es/cod/1539309.cif