http://qiserver.ugr.es/cod/4000693.cif
http://qiserver.ugr.es/cod/4000694.cif
http://qiserver.ugr.es/cod/4000695.cif
http://qiserver.ugr.es/cod/4000696.cif
http://qiserver.ugr.es/cod/4000697.cif
http://qiserver.ugr.es/cod/4000698.cif
http://qiserver.ugr.es/cod/4000699.cif