2-Oxo-N-(2-(1-pyrrolidinyl)ethyl)-2H-1-benzopyran-3-carboxamide monohydrochloride 2H-1-Benzopyran-3-carboxamide, 2-oxo-N-(2-(1-pyrrolidinyl)ethyl)-, monohydrochloride 68654-59-1 F 1543 N-(2'-Pyrrolidinoethyl)-3-coumarin carboxamide hydrochloride