http://qiserver.ugr.es/cod/2310077.cif
http://qiserver.ugr.es/cod/2311012.cif
http://qiserver.ugr.es/cod/9007493.cif
http://qiserver.ugr.es/cod/9007494.cif
http://qiserver.ugr.es/cod/9011072.cif