1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 8-(2-(4-fluorophenyl)ethyl)-4-methylene-3-phenyl- 134069-66-2 8-(2-(4-Fluorophenyl)ethyl)-4-methylene-3-phenyl-1-oxa-3,8-diazaspiro(4.5)decan-2-one