http://qiserver.ugr.es/cod/1542365.cif
http://qiserver.ugr.es/cod/1542627.cif
http://qiserver.ugr.es/cod/1553250.cif
http://qiserver.ugr.es/cod/1553251.cif
http://qiserver.ugr.es/cod/1553252.cif