| n<sup>2</sup>-{[(3s,6s,9s,12s,15s)-9,12-bis(4-aminobutyl)-3,6,15-tris{3-[(diaminomethylidene)amino]propyl}-2,5,8,11,14,17,21-heptaoxo-1,4,7,10,13,16,22-heptaazacyclooctacosan-1-yl]acetyl}-n<sup>5</sup>-(diaminomethylidene)-l-ornithyl-n<sup>5</sup>-(diamin |
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