http://qiserver.ugr.es/cod/1511099.cif
http://qiserver.ugr.es/cod/1511101.cif
http://qiserver.ugr.es/cod/1511174.cif
http://qiserver.ugr.es/cod/1511209.cif
http://qiserver.ugr.es/cod/1530678.cif
http://qiserver.ugr.es/cod/1539219.cif