Showing structure for n-{[(5-amino-1-{[3,6,9,12-tetrakis(4-aminobutyl)-2,5,8,11,14-pentahydroxy-1,4,7,10,13-pentaazacyclononadeca-1,4,7,10,13-pentaen-15-yl]-c-hydroxycarbonimidoyl}pentyl)-c-hydroxycarbonimidoyl]methyl}-3-hydroxyoctadecanimidic acid