ethyl (2R,3E)-3-(4-ethylbenzylidene)-1,4-dioxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate

ethyl (2R,3E)-3-(4-ethylbenzylidene)-1,4-dioxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate