http://qiserver.ugr.es/cod/1010421.cif
http://qiserver.ugr.es/cod/1010422.cif
http://qiserver.ugr.es/cod/1010540.cif
http://qiserver.ugr.es/cod/1011175.cif
http://qiserver.ugr.es/cod/1011177.cif