1'-(3-(p-Fluorobenzoyl)propyl)spiro(benzofuran-3(2H),4'-piperidine)-2-one hydrochloride 73962-15-9 Spiro(benzofuran-3(2H),4'-piperidine)-2-one, 1'-(3-(p-fluorobenzoyl)propyl)-, hydrochloride