http://qiserver.ugr.es/cod/1529786.cif
http://qiserver.ugr.es/cod/1530009.cif
http://qiserver.ugr.es/cod/1530297.cif
http://qiserver.ugr.es/cod/1530409.cif
http://qiserver.ugr.es/cod/1530537.cif
http://qiserver.ugr.es/cod/1530665.cif
http://qiserver.ugr.es/cod/9009543.cif