http://qiserver.ugr.es/cod/1521087.cif
http://qiserver.ugr.es/cod/1521198.cif
http://qiserver.ugr.es/cod/1521199.cif
http://qiserver.ugr.es/cod/1521200.cif
http://qiserver.ugr.es/cod/1521718.cif