http://qiserver.ugr.es/cod/1525054.cif
http://qiserver.ugr.es/cod/1530109.cif
http://qiserver.ugr.es/cod/1537724.cif
http://qiserver.ugr.es/cod/1539139.cif
http://qiserver.ugr.es/cod/1539141.cif