Using Clc1ccc2scc(CBr)c2c1, O=C1Nc2ccccc2C1=O to produce O=C1C(=O)N(Cc2csc3ccc(Cl)cc23)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.