9-N(N'-Chloroethyl-N'-ethyl-1,5-diaminopentyl)2-methoxy acridine dihydrochloride AIDS-156839 AIDS156839 NSC631199 (HYDROCHLORIDE SALT) N~1~-(2-Chloroethyl)-N~1~-ethyl-N~5~-(2-methoxy-9-acridinyl)-1,5-pentanediamine hydrochloride