http://qiserver.ugr.es/cod/1528021.cif
http://qiserver.ugr.es/cod/1528022.cif
http://qiserver.ugr.es/cod/1528023.cif
http://qiserver.ugr.es/cod/1528201.cif
http://qiserver.ugr.es/cod/1540015.cif