http://qiserver.ugr.es/cod/1527862.cif
http://qiserver.ugr.es/cod/1535838.cif
http://qiserver.ugr.es/cod/1535842.cif
http://qiserver.ugr.es/cod/1535846.cif
http://qiserver.ugr.es/cod/1535849.cif
http://qiserver.ugr.es/cod/1535852.cif