Using Cc1cc(Oc2ccc(C#N)cc2)nc2cc(Br)ccc12, O=C([O-])[O-] to produce Cc1cc(Oc2ccc(C#N)cc2)nc2cc(-c3ccccc3C=O)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.