http://qiserver.ugr.es/cod/1528856.cif
http://qiserver.ugr.es/cod/1541935.cif
http://qiserver.ugr.es/cod/1542173.cif
http://qiserver.ugr.es/cod/1542174.cif
http://qiserver.ugr.es/cod/9012469.cif