http://qiserver.ugr.es/cod/1509874.cif
http://qiserver.ugr.es/cod/1511258.cif
http://qiserver.ugr.es/cod/1522610.cif
http://qiserver.ugr.es/cod/1522611.cif
http://qiserver.ugr.es/cod/1523285.cif