Using C[O-], COC(=O)c1ccc(Br)c2nc3n(c12)CCCN3c1ccc(Cl)cc1Cl to produce COC(=O)c1ccc(OC)c2nc3n(c12)CCCN3c1ccc(Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.