http://qiserver.ugr.es/cod/1528469.cif
http://qiserver.ugr.es/cod/1528605.cif
http://qiserver.ugr.es/cod/1534207.cif
http://qiserver.ugr.es/cod/1534208.cif
http://qiserver.ugr.es/cod/1537463.cif