英文别名(S)-2-{1-[2-(2,3-dihydrobenzofuran-5-yl)ethyl]-3-pyrrolidinyl}-2,2-diphenylacetonitrile; {(3S)-1-[1-(2,3-DIHYDRO-1-BENZOFURAN-5-YL)ETHYL]PYRROLIDIN-3-YL}DIPHENYLACETONITRILE; Darifenacin Nitrile Impurity; 3-Pyrrolidineacetonitrile, 1-[2-(2,3-dihydro-5-benzofuranyl)ethyl]-α,α-diphenyl-, (3S)-; DarifecinImpurity1; DARIFECIN NITRILE IMPURITY 
