http://qiserver.ugr.es/cod/1510895.cif
http://qiserver.ugr.es/cod/1527577.cif
http://qiserver.ugr.es/cod/1528031.cif
http://qiserver.ugr.es/cod/1528164.cif
http://qiserver.ugr.es/cod/2002230.cif