4,6-Dimethyl-12-oxa-2,4,5-triazatricyclo[7.4.0.0,3,7]trideca-1(9),2,5,7-tetraen-13-one 1g

4,6-Dimethyl-12-oxa-2,4,5-triazatricyclo[7.4.0.0,3,7]trideca-1(9),2,5,7-tetraen-13-one 1g