6-Methyl-4,12-dioxa-2,5-diazatricyclo[7.4.0.0,3,7]trideca-1(9),2,5,7-tetraen-13-one 1g

6-Methyl-4,12-dioxa-2,5-diazatricyclo[7.4.0.0,3,7]trideca-1(9),2,5,7-tetraen-13-one 1g