http://qiserver.ugr.es/cod/9009867.cif
http://qiserver.ugr.es/cod/9009868.cif
http://qiserver.ugr.es/cod/9009869.cif
http://qiserver.ugr.es/cod/9009870.cif
http://qiserver.ugr.es/cod/9016636.cif