http://qiserver.ugr.es/cod/1525659.cif
http://qiserver.ugr.es/cod/1525660.cif
http://qiserver.ugr.es/cod/1526425.cif
http://qiserver.ugr.es/cod/1526959.cif
http://qiserver.ugr.es/cod/1526960.cif
http://qiserver.ugr.es/cod/1526961.cif
http://qiserver.ugr.es/cod/1526962.cif