http://qiserver.ugr.es/cod/1551077.cif
http://qiserver.ugr.es/cod/1551886.cif
http://qiserver.ugr.es/cod/9017144.cif
http://qiserver.ugr.es/cod/9017145.cif
http://qiserver.ugr.es/cod/9017853.cif