http://qiserver.ugr.es/cod/1557166.cif
http://qiserver.ugr.es/cod/1560194.cif
http://qiserver.ugr.es/cod/1560195.cif
http://qiserver.ugr.es/cod/9017715.cif
http://qiserver.ugr.es/cod/9017716.cif
http://qiserver.ugr.es/cod/9017717.cif