2-((4-Tert-butyl-1-(cyclohexylmethyl)cyclohexyl)oxy)-N,N-dimethylethanamine 2-butenedioate AIDS-158548 AIDS158548 NSC670227 Trans-2-((1-(cyclohexyl-methyl)-4-tert.butylcyclohexyl)oxy)N, N-dimethyl-1-ethanamine-, salt of fumaric acid