(6S,9S,12R,15S,18R,21S,24R)-1,1,6-triamino-21-(4-aminobutyl)-12,18-bis(3-aminopropyl)-9-{(2S)-3-[(diaminomethylidene)amino]-2-hydroxypropyl}-24-(4-hydroxybenzyl)-15-[(1R)-1-hydroxyethyl]-7,10,13,16,19,22-hexaoxo-2,8,11,14,17,20,23-heptaazapentacos-1-en-25