Ethyl 5-(4-chlorophenyl)-4,6-dioxo-3aH,4H,5H,6H,6aH-pyrrolo[3,4-d][1,2]oxazole-3-carboxylate 1g

Ethyl 5-(4-chlorophenyl)-4,6-dioxo-3aH,4H,5H,6H,6aH-pyrrolo[3,4-d][1,2]oxazole-3-carboxylate 1g