http://qiserver.ugr.es/cod/1530898.cif
http://qiserver.ugr.es/cod/1530951.cif
http://qiserver.ugr.es/cod/1542151.cif
http://qiserver.ugr.es/cod/9009533.cif
http://qiserver.ugr.es/cod/9011920.cif