Using Cn1nc(-c2ccccc2)c(Oc2ccc(N)cc2)c1-c1ccccc1, Cl to produce Cn1nc(-c2ccccc2)c(Oc2ccc(Cl)cc2)c1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.