http://qiserver.ugr.es/cod/2019342.cif
http://qiserver.ugr.es/cod/2019361.cif
http://qiserver.ugr.es/cod/2019362.cif
http://qiserver.ugr.es/cod/2310142.cif
http://qiserver.ugr.es/cod/2312028.cif
http://qiserver.ugr.es/cod/2312029.cif