http://qiserver.ugr.es/cod/4507439.cif
http://qiserver.ugr.es/cod/4508120.cif
http://qiserver.ugr.es/cod/4508121.cif
http://qiserver.ugr.es/cod/4508382.cif
http://qiserver.ugr.es/cod/4508612.cif
http://qiserver.ugr.es/cod/4510604.cif