5-(8-Ethoxy-2-oxo-2H-chromen-3-yl)-8-thia-4,6-diazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2(7),5-trien-3-one 1g

5-(8-Ethoxy-2-oxo-2H-chromen-3-yl)-8-thia-4,6-diazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2(7),5-trien-3-one 1g