http://qiserver.ugr.es/cod/1525573.cif
http://qiserver.ugr.es/cod/1526005.cif
http://qiserver.ugr.es/cod/1526006.cif
http://qiserver.ugr.es/cod/1526648.cif
http://qiserver.ugr.es/cod/1526720.cif
http://qiserver.ugr.es/cod/1526736.cif
http://qiserver.ugr.es/cod/1527036.cif