http://qiserver.ugr.es/cod/1566662.cif
http://qiserver.ugr.es/cod/9014235.cif
http://qiserver.ugr.es/cod/9016611.cif
http://qiserver.ugr.es/cod/9016716.cif
http://qiserver.ugr.es/cod/9017812.cif