http://qiserver.ugr.es/cod/9014427.cif
http://qiserver.ugr.es/cod/9015766.cif
http://qiserver.ugr.es/cod/9016374.cif
http://qiserver.ugr.es/cod/9016523.cif
http://qiserver.ugr.es/cod/9016627.cif