4-{[4-Methyl-3-({3-[({[3-({[2-methyl-5-({[4-(phosphonomethyl)phenyl]amino}carbonyl)phenyl]amino}carbonyl)phenyl]amino}carbonyl)amino]benzoyl}amino)benzoyl]amino}benzylphosphonic acid AIDS-158959 AIDS158959 NSC683278 (SODIUM SALT)