http://qiserver.ugr.es/cod/1538632.cif
http://qiserver.ugr.es/cod/9014952.cif
http://qiserver.ugr.es/cod/9015296.cif
http://qiserver.ugr.es/cod/9015767.cif
http://qiserver.ugr.es/cod/9016549.cif
http://qiserver.ugr.es/cod/9016726.cif