1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 4-methylene-3-phenyl-8-(2-phenylethyl)- 134069-60-6 4-Methylene-3-phenyl-8-(2-phenylethyl)-1-oxa-3,8-diazaspiro(4.5)decan-2-one