4-Ethyl-8-(1,2,3,4-tetrahydronaphthalen-2-yl)-1-oxa-3,8-diazaspiro[4.5]decan-2-one

4'-Ethyl-1-(1,2,3,4-tetrahydronaphthalen-2-yl)spiro[piperidine-4,5'-oxazolidin]-2'-one