http://qiserver.ugr.es/cod/1527198.cif
http://qiserver.ugr.es/cod/1537930.cif
http://qiserver.ugr.es/cod/1537932.cif
http://qiserver.ugr.es/cod/1537934.cif
http://qiserver.ugr.es/cod/1537936.cif