http://qiserver.ugr.es/cod/1524653.cif
http://qiserver.ugr.es/cod/1524654.cif
http://qiserver.ugr.es/cod/1524655.cif
http://qiserver.ugr.es/cod/1524656.cif
http://qiserver.ugr.es/cod/1538644.cif