http://qiserver.ugr.es/cod/7241701.cif
http://qiserver.ugr.es/cod/7241702.cif
http://qiserver.ugr.es/cod/7241703.cif
http://qiserver.ugr.es/cod/7242120.cif
http://qiserver.ugr.es/cod/7242121.cif
http://qiserver.ugr.es/cod/7242122.cif
http://qiserver.ugr.es/cod/7242123.cif