4-[3-(Trifluoromethyl)phenyl]-10-oxa-4-azatricyclo[5.2.1.0^{2,6}]dec-8-ene-3,5-dione 1g

4-[3-(Trifluoromethyl)phenyl]-10-oxa-4-azatricyclo[5.2.1.0^{2,6}]dec-8-ene-3,5-dione 1g