4-Chloro-9-methyl-8-oxa-10,12-diazatricyclo[7.3.1.0,2,7]trideca-2,4,6-trien-11-one 5g

4-Chloro-9-methyl-8-oxa-10,12-diazatricyclo[7.3.1.0,2,7]trideca-2,4,6-trien-11-one 5g