http://qiserver.ugr.es/cod/1521518.cif
http://qiserver.ugr.es/cod/1526139.cif
http://qiserver.ugr.es/cod/1531303.cif
http://qiserver.ugr.es/cod/1531792.cif
http://qiserver.ugr.es/cod/1535011.cif
http://qiserver.ugr.es/cod/1535659.cif