1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 8-(3-(p-fluorobenzoyl)propyl)-3,4-dimethyl-, hydrochloride 102504-25-6 8-(3-(4-Fluorobenzoyl)propyl)-3,4-dimethyl-2-oxo-3,8-diaza-1-oxaspiro(4,5)decane HCl