http://qiserver.ugr.es/cod/1521128.cif
http://qiserver.ugr.es/cod/1521130.cif
http://qiserver.ugr.es/cod/1521132.cif
http://qiserver.ugr.es/cod/1521133.cif
http://qiserver.ugr.es/cod/1521365.cif