http://qiserver.ugr.es/cod/7037799.cif
http://qiserver.ugr.es/cod/7037800.cif
http://qiserver.ugr.es/cod/7037801.cif
http://qiserver.ugr.es/cod/7037802.cif
http://qiserver.ugr.es/cod/7037803.cif