Synonyms: 1,4,7,10,13,16-Hexaazacyclooctadecane,cyclic peptide deriv.; Iron,[cyclo[glycyl-N5-hydroxy-N5-(5-hydroxy-3-methyl-1-oxo-2-pentenyl)-L-ornithyl-N5-hydroxy-N5-(5-hydroxy-3-methyl-1-oxo-2-pentenyl)-L-ornithyl-N5-hydroxy-N5-(5-hydroxy-3-methyl-1-oxo-2-pentenyl)-L-ornithyl-L-seryl-L-seryl]ato(3-)]-,[OC-6-64-C-(E,E,E)]-;[OC-6-64-C-(E,E,E)]-[Cyclo[glycyl-N5-hydroxy-N5-(5-hydroxy-3-methyl-1-oxo-2-pentenyl)-L-ornithyl-N5-hydroxy-N5-(5-hydroxy-3-methyl-1-oxo-2-pentenyl)-L-ornithyl-N5-hydroxy-N5-(5-hydroxy-3-methyl-1-oxo-2-pentenyl)-L-ornithyl-L-seryl-L-seryl]ato(3-)]iron