http://qiserver.ugr.es/cod/1526074.cif
http://qiserver.ugr.es/cod/1531601.cif
http://qiserver.ugr.es/cod/1535544.cif
http://qiserver.ugr.es/cod/1535547.cif
http://qiserver.ugr.es/cod/9013499.cif