http://qiserver.ugr.es/cod/1001035.cif
http://qiserver.ugr.es/cod/1001199.cif
http://qiserver.ugr.es/cod/2002203.cif
http://qiserver.ugr.es/cod/4031557.cif
http://qiserver.ugr.es/cod/4031644.cif