http://qiserver.ugr.es/cod/1539547.cif
http://qiserver.ugr.es/cod/9004161.cif
http://qiserver.ugr.es/cod/9004162.cif
http://qiserver.ugr.es/cod/9004163.cif
http://qiserver.ugr.es/cod/9004164.cif
http://qiserver.ugr.es/cod/9004165.cif