darifenacin [ Emselex,UK-88525,(S)-1-(2-(2,3-dihydro-5-benzofuranyl)ethyl)-alpha,alpha-diphenyl-3-pyrrolidineacetamide,Enablex,darifenacin hydrochloride,darifenacine,darifenicin ] RN refers to (S),alpha,alpha-isomer; structure given in first source; Enablex transferred from Pfizer to Novartis 2003; muscarinic M(3) receptor antagonist that is indicated for use in treatment of ov