Using Nc1c[nH]c2ncc(Br)c(F)c12, O=C(Cl)c1ccccn1 to produce O=C(Nc1c[nH]c2ncc(Br)c(F)c12)c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.