http://qiserver.ugr.es/cod/1509388.cif
http://qiserver.ugr.es/cod/1509429.cif
http://qiserver.ugr.es/cod/1511476.cif
http://qiserver.ugr.es/cod/1525250.cif
http://qiserver.ugr.es/cod/1529745.cif