http://qiserver.ugr.es/cod/9009287.cif
http://qiserver.ugr.es/cod/9009288.cif
http://qiserver.ugr.es/cod/9009289.cif
http://qiserver.ugr.es/cod/9009290.cif
http://qiserver.ugr.es/cod/9014730.cif