1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 8-(2-(4-fluorophenyl)ethyl)-4-methylene-3-propyl- 134069-76-4 8-(2-(4-Fluorophenyl)ethyl)-4-methylene-3-propyl-1-oxa-3,8-diazaspiro(4.5)decan-2-one