http://qiserver.ugr.es/cod/1500045.cif
http://qiserver.ugr.es/cod/7204901.cif
http://qiserver.ugr.es/cod/7204902.cif
http://qiserver.ugr.es/cod/7204903.cif
http://qiserver.ugr.es/cod/7204905.cif