http://qiserver.ugr.es/cod/1558635.cif
http://qiserver.ugr.es/cod/1559485.cif
http://qiserver.ugr.es/cod/1559871.cif
http://qiserver.ugr.es/cod/1559872.cif
http://qiserver.ugr.es/cod/1559873.cif