http://qiserver.ugr.es/cod/1529753.cif
http://qiserver.ugr.es/cod/1529754.cif
http://qiserver.ugr.es/cod/1530376.cif
http://qiserver.ugr.es/cod/1530377.cif
http://qiserver.ugr.es/cod/1530871.cif