21872-77-5

N-[3-[5,8-BIS[3-(ACETYL-OXIDO-AMINO)PROPYL]-3,6,9,12,15,18-HEXAOXO-1,4,7,10,13,16-HEXAZACYCLOOCTADEC-2-YL]PROPYL]-N-OXIDO-ACETAMIDE; IRON(+3) CATION