1(6),3-Cyclohexadiene-1,3-dicarboxyaldehyde, 4, {6-dichloro-5-[(dimethylamino)methylene]-} 4,6-Dichloro-5-((dimethylamino)methylene)-3,6-cyclohexadiene-1,3-dicarbaldehyde AIDS-132682 AIDS132682 NSC627151