http://qiserver.ugr.es/cod/9014377.cif
http://qiserver.ugr.es/cod/9014753.cif
http://qiserver.ugr.es/cod/9014758.cif
http://qiserver.ugr.es/cod/9015736.cif
http://qiserver.ugr.es/cod/9015842.cif