http://qiserver.ugr.es/cod/1539859.cif
http://qiserver.ugr.es/cod/1539861.cif
http://qiserver.ugr.es/cod/1539862.cif
http://qiserver.ugr.es/cod/1539864.cif
http://qiserver.ugr.es/cod/1539866.cif
http://qiserver.ugr.es/cod/1539868.cif
http://qiserver.ugr.es/cod/1539870.cif