6-Oxa-3-azatricyclo(3.2.2.0(sup 2,4))nonane-3-carboxamide, N-(1-methylethyl)-5,7,7-trimethyl- 82872-83-1 N-(1-Methylethyl)-5,7,7-trimethyl-6-oxa-3-azatricyclo(3.2.2.0(sup 2,4))nonane-3-carboxamide