http://qiserver.ugr.es/cod/1511719.cif
http://qiserver.ugr.es/cod/1524081.cif
http://qiserver.ugr.es/cod/1525050.cif
http://qiserver.ugr.es/cod/1530159.cif
http://qiserver.ugr.es/cod/1530160.cif
http://qiserver.ugr.es/cod/1531021.cif
http://qiserver.ugr.es/cod/1533014.cif