http://qiserver.ugr.es/cod/1523477.cif
http://qiserver.ugr.es/cod/1525347.cif
http://qiserver.ugr.es/cod/1525348.cif
http://qiserver.ugr.es/cod/1525349.cif
http://qiserver.ugr.es/cod/1539828.cif