1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 3-ethyl-4-methylene-8-(2-phenylethyl)- 134069-67-3 3-Ethyl-4-methylene-8-(2-phenylethyl)-1-oxa-3,8-diazaspiro(4.5)decan-2-one