http://qiserver.ugr.es/cod/1522615.cif
http://qiserver.ugr.es/cod/1522616.cif
http://qiserver.ugr.es/cod/1523053.cif
http://qiserver.ugr.es/cod/1523054.cif
http://qiserver.ugr.es/cod/1538788.cif