1,3-Propanedinitrile, {2-[[4-[4-(dimethylamino)phenyl]imino]-} 1, 4-dihydro-1-naphthalenylidene\]- 2-(4-((4-(Dimethylamino)phenyl)imino)-1(4H)-naphthalenylidene)malononitrile AIDS-132946 AIDS132946 NSC627777