Using Cc1nc2c(OCc3c(Cl)ccc(N)c3Cl)cccn2c1Br, CCN=C=O to produce CCNC(=O)Nc1ccc(Cl)c(COc2cccn3c(Br)c(C)nc23)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.