http://qiserver.ugr.es/cod/1001761.cif
http://qiserver.ugr.es/cod/1001803.cif
http://qiserver.ugr.es/cod/1530872.cif
http://qiserver.ugr.es/cod/1544560.cif
http://qiserver.ugr.es/cod/9011086.cif