http://qiserver.ugr.es/cod/1534536.cif
http://qiserver.ugr.es/cod/1535402.cif
http://qiserver.ugr.es/cod/1536407.cif
http://qiserver.ugr.es/cod/1536765.cif
http://qiserver.ugr.es/cod/1536768.cif