http://qiserver.ugr.es/cod/1528774.cif
http://qiserver.ugr.es/cod/1528775.cif
http://qiserver.ugr.es/cod/1528838.cif
http://qiserver.ugr.es/cod/1529015.cif
http://qiserver.ugr.es/cod/1541759.cif