26-Amino-23-(4-aminobutyl)-5-(2-amino-2-oxoethyl)-14-(4-hydroxybenzyl)-8-(1-hydroxyethyl)-11,17-bis(hydroxymethyl)-2-(1H-imidazol-5-ylmethyl)-20-methyl-4,7,10,13,16,19,22,25-octaoxo-3,6,9,12,15,18,21,\t24-octaazaoctacosane-1,28-dioic acid AIDS-135333 AIDS135333 NSC634820