http://qiserver.ugr.es/cod/1548517.cif
http://qiserver.ugr.es/cod/1548518.cif
http://qiserver.ugr.es/cod/1548519.cif
http://qiserver.ugr.es/cod/1548520.cif
http://qiserver.ugr.es/cod/1548521.cif
http://qiserver.ugr.es/cod/1548522.cif