1,5-Naphthalenedisulfonic acid, 4,4'-[carbonylbis[imino-1H-pyrrole-5,2-diylcarbonylimino(1-methyl-1H-pyrrole-4,2-diyl)carbnylimino]]bis-, tetrasodium salt 208576-39-0 (TETRASODIUM SALT) AIDS-058925 AIDS058925 Distamycin analog NSC645795