http://qiserver.ugr.es/cod/1525720.cif
http://qiserver.ugr.es/cod/1526713.cif
http://qiserver.ugr.es/cod/1526735.cif
http://qiserver.ugr.es/cod/1526737.cif
http://qiserver.ugr.es/cod/1528224.cif