3-[5-cyano-1-(4-fluorophenyl)-3H-2-benzofuran-1-yl]-N,N-dimethylpropan-1-amine oxide 3-[5-cyano-1-(4-fluorophenyl)-3H-isobenzofuran-1-yl]-N,N-dimethyl-propan-1-amine oxide 3-[5-cyano-1-(4-fluorophenyl)-3H-isobenzofuran-1-yl]-N,N-dimethylpropan-1-amine oxide 3-[5-cyano-1-(4-fluorophenyl)-3H-2-benzofuran-1-yl]-N,N-dimethyl-propan-1-amine oxide