Using c1ccc2[nH]cnc2c1, O=C(Nc1cccc2c(CBr)ccnc12)c1c(Cl)cccc1Cl to produce O=C(Nc1cccc2c(Cn3cnc4ccccc43)ccnc12)c1c(Cl)cccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.