http://qiserver.ugr.es/cod/1509747.cif
http://qiserver.ugr.es/cod/1510525.cif
http://qiserver.ugr.es/cod/1522079.cif
http://qiserver.ugr.es/cod/1523803.cif
http://qiserver.ugr.es/cod/1523804.cif
http://qiserver.ugr.es/cod/1538773.cif