http://qiserver.ugr.es/cod/1527297.cif
http://qiserver.ugr.es/cod/1527544.cif
http://qiserver.ugr.es/cod/1527545.cif
http://qiserver.ugr.es/cod/1527769.cif
http://qiserver.ugr.es/cod/1527780.cif
http://qiserver.ugr.es/cod/1527781.cif