http://qiserver.ugr.es/cod/1538684.cif
http://qiserver.ugr.es/cod/1541850.cif
http://qiserver.ugr.es/cod/1541873.cif
http://qiserver.ugr.es/cod/1542087.cif
http://qiserver.ugr.es/cod/1542158.cif