29-Amino-8,11-bis(4-aminobutyl)-2-benzyl-14,26-disec-butyl-5,17,23-tris(hydroxymethyl)-20,30-dimethyl-4,7,10,13,16,19,22,25,28-nonaoxo-3,6,9,12,15,18,21,24,27-nonaazadotriacontan-1-oic acid AIDS-133999 AIDS133999 NSC631163