http://qiserver.ugr.es/cod/1529675.cif
http://qiserver.ugr.es/cod/1530296.cif
http://qiserver.ugr.es/cod/1530452.cif
http://qiserver.ugr.es/cod/1530455.cif
http://qiserver.ugr.es/cod/1530577.cif