5-Nitro-2-oxa-11-azatricyclo[10.4.0.0^{4,9}]hexadeca-1(16),4(9),5,7,12,14-hexaen-10-one 1g

5-Nitro-2-oxa-11-azatricyclo[10.4.0.0^{4,9}]hexadeca-1(16),4(9),5,7,12,14-hexaen-10-one 1g