http://qiserver.ugr.es/cod/1509264.cif
http://qiserver.ugr.es/cod/1534425.cif
http://qiserver.ugr.es/cod/1535482.cif
http://qiserver.ugr.es/cod/1536067.cif
http://qiserver.ugr.es/cod/1536681.cif