http://qiserver.ugr.es/cod/1538778.cif
http://qiserver.ugr.es/cod/1538781.cif
http://qiserver.ugr.es/cod/1539187.cif
http://qiserver.ugr.es/cod/1540892.cif
http://qiserver.ugr.es/cod/1541329.cif